1. The simple elbow draft tube is placed close to the_______.
A. Head race.
B. Tail race.
C. Tank.
D. Nozzle.
Answer = Tail race
2. Turbine that consists of draft tubes is called as__________.
A. Impulse turbine.
B. Curtis turbine.
C. Rateau turbine.
D. Reaction turbine.
Answer = Reaction turbine
3. Which of the following is a 50 percent reaction turbine?.
A. Parsons turbine.
B. Curtis turbine.
C. Rateau turbine.
D. Pelton wheel.
Answer = Parsons turbine
4. The simple elbow draft tube helps to cut down the cost of excavation..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
5. The exit diameter for a simple elbow draft tube should be________.
A. Large.
B. Small.
C. Very small.
D. Same.
Answer = Large
6. Properties that do not affect a draft tube is _______.
A. Pressure.
B. Temperature.
C. Pressure velocity.
D. Velocity.
Answer = Temperature
7. The other name for elbow with varying cross section tube is called_____.
A. Pressure tube.
B. Bent draft tube.
C. Velocity tube.
D. Sink tube.
Answer = Bent draft tube
8. What is the efficiency of the simple elbow type draft tube?.
A. 10.0.
B. 30.0.
C. 60.0.
D. 90.0.
Answer = 60.0
9. The horizontal portion of the draft tube is usually bent to prevent entry of air from the exit end..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
10. The efficiency of the draft tube is ratio of ________.
A. Pressure energy by kinetic energy.
B. Kinetic energy by Pressure energy.
C. Kinetic energy into mechanical energy.
D. Pressure into mechanical.
Answer = Kinetic energy by Pressure energy
11. Draft tubes are not used in which of the following turbines?.
A. Francis.
B. Reaction.
C. Kaplan.
D. Pelton.
Answer = Pelton
12. The draft tube at the exit of the nozzle increases the _______.
A. Temperature.
B. Pressure.
C. Volume of the flow.
D. Density of flow.
Answer = Pressure
13. Efficiency of a draft tube gives __________.
A. Temperature difference.
B. Pressure difference.
C. Kinetic energy difference.
D. Density of flow.
Answer = Kinetic energy difference
14. Cavitation in a draft tube occurs when _______.
A. Temperature difference.
B. Pressure drop.
C. Kinetic energy difference.
D. Density of flow.
Answer = Pressure drop
15. Which among the following is an important parameter to avoid cavitation?.
A. Tail race length.
B. Head race length.
C. Height of draft tube.
D. Pump.
Answer = Height of draft tube
16. The draft tube is situated in the _______.
A. Inlet.
B. Outlet.
C. Tank.
D. Nozzle.
Answer = Outlet
17. Which equation is applied to determine the flow?.
A. Newtons equation.
B. Rutherford’s equation.
C. Bernoulli’s equation.
D. Faradays equation.
Answer = Bernoulli’s equation
18. Height of the draft tube is denoted by _____.
A. H.
B. h.
C. z.
D. x.
Answer = z
19. Draft tube allows turbine to be placed above the tail race..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
20. The efficiency of the draft tube depends on the ______.
A. Heat.
B. Pressure.
C. Temperature.
D. Pressure and temperature.
Answer = Pressure and temperature
21. Draft tubes have _________ shafts.
A. Horizontal.
B. Vertical.
C. Circular.
D. Cross sectional.
Answer = Vertical
22. Draft tubes are situated at the outlet in____________.
A. Pelton.
B. Reaction.
C. Kaplan.
D. Francis.
Answer = Pelton
23. Efficiency of a draft tube is directly proportional to its __________.
A. Temperature.
B. Pressure.
C. Velocity.
D. Density.
Answer = Velocity
24. Z is a draft tube is _______.
A. Temperature difference.
B. Pressure drop.
C. Kinetic energy difference.
D. Datum head.
Answer = Datum head
25. Draft tube operates at ______.
A. Same efficiency.
B. Different efficiency.
C. Turbine.
D. Pump.
Answer = Same efficiency
26. The draft tube is an ________.
A. Interior tube.
B. Exterior tube.
C. Tank depth alternator.
D. Nozzle tube.
Answer = Exterior tube
27. What type of pressure does the draft tube depend upon?.
A. Gauge pressure.
B. Atm pressure.
C. Normal pressure.
D. Normal and Atm pressure.
Answer = Gauge pressure
28. Gauge pressure of the draft tube is denoted by _____.
A. P.
B. h.
C. z.
D. x.
Answer = P
29. Draft tube allows turbine to be placed below the tail race..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = FALSE
30. Specific speed is denoted by ________.
A. N.
B. n.
C. Ns.
D. S.
Answer = Ns
31. Specific speeds are used in pumps to determine ________.
A. Temperature.
B. Reaction speed.
C. Suction specific speed.
D. Wheel speed.
Answer = Suction specific speed
32. The tube at the exit of the nozzle increases the _______.
A. Temperature.
B. Pressure.
C. Volume of the flow.
D. Density of flow.
Answer = Pressure
33. Specific speed is used to characterize _______.
A. Turbomachinery speed.
B. Flow speed.
C. Energy flow.
D. Heat generated.
Answer = Turbomachinery speed
34. Specific speed predicts the shape of a/an _________.
A. Pump.
B. Density head.
C. Impeller.
D. Motor.
Answer = Impeller
35. What helps in categorizing the impellers?.
A. Quasi static number.
B. Rotor.
C. Height of draft tube.
D. Pump.
Answer = Quasi static number
36. Imperial units is defined as _________.
A. Temperature by pressure.
B. Tail race and head race.
C. Revolutions per minute.
D. Turbine performance.
Answer = Revolutions per minute
37. Ratio of pump or turbine with reference pump or turbine is called as _________.
A. Efficiency.
B. Performance.
C. Heat generated.
D. Relative velocity.
Answer = Performance
38. Low specific speed in hydraulic head is developed due to _________.
A. Mass flow rate.
B. Increase in temperature.
C. Centrifugal force.
D. Increase in pressure.
Answer = Centrifugal force
39. Centrifugal pump impellers have speed ranging from ________.
A. 500- 10000.
B. 50- 100.
C. 200-300.
D. 0-50.
Answer = 500- 10000
40. What is the unit of specific speed in metric system?.
A. m.s.
B. m/s.
C. m3/s.
D. m.
Answer = m3/s
41. Specific speed develop a hydraulic flow through the centrifugal pumps..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
42. Net suction speed is used in problems with cavitation..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
43. Low specific speed in hydraulic head is developed due to _________.
A. Mass flow rate.
B. Increase in temperature.
C. Centrifugal force.
D. Increase in pressure.
Answer = Centrifugal force
44. The runner diameter in a turbine is denoted as __________.
A. A.
B. Dr.
C. Rr.
D. De.
Answer = De
45. Specific speed is the speed of the turbine which is similar to its ________.
A. Temperature difference.
B. Pressure difference.
C. Aspect ratio.
D. Speed of rotor.
Answer = Aspect ratio
46. Specific speeds are used in pumps to determine ________.
A. Temperature.
B. Reaction speed.
C. Suction specific speed.
D. Wheel speed.
Answer = Suction specific speed
47. Specific speed develops a unit power under a unit _______.
A. Temperature.
B. Pressure.
C. Volume of the flow.
D. Head.
Answer = Head
48. Impeller in a motor is used to _________.
A. Change temperatures.
B. Change Pressure.
C. Kinetic energy change.
D. Change density.
Answer = Change Pressure
49. Hydraulic head is also called as _________.
A. Pressure head.
B. Density head.
C. Kinetic head.
D. Piezometric head.
Answer = Piezometric head
50. Specific speed of a Pelton wheel with single jet is _______.
A. 8.5 to 30.
B. 30 to 51.
C. 51 to 225.
D. 230 to 500.
Answer = 8.5 to 30
51. Specific speed is an index used to predict _______.
A. Head race distance.
B. Tail race distance.
C. Tank dimensions.
D. Turbine performance.
Answer = Turbine performance
52. Specific speed of a Pelton wheel with multiple jets is _______.
A. 8.5 to 30.
B. 30 to 51.
C. 51 to 225.
D. 230 to 500.
Answer = 30 to 51
53. Specific speed of a Francis turbine is _______.
A. 8.5 to 30.
B. 30 to 51.
C. 51 to 225.
D. 230 to 500.
Answer = 51 to 225
54. Specific speed of a Kaplan turbine is _______.
A. 8.5 to 30.
B. 30 to 51.
C. 51 to 225.
D. 355 to 860.
Answer = 355 to 860
55. Specific speed less than 500 are called _________.
A. Positive displacement pumps.
B. Negative displacement pumps.
C. Draft tubes.
D. Tanks.
Answer = Positive displacement pumps
56. With the increase in specific speeds, ________.
A. Head race distance increases.
B. Tail race distance increases.
C. Tank dimensions increases.
D. Diameters of impeller increases.
Answer = Diameters of impeller increases
57. Specific speed is used to predict desired pump or turbine performance..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
58. Once we know the desired functions of the specific speed, it is easier to calculate its components units..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
59. Constant head curves are also called as _______.
A. Head race curves.
B. Tail race curves.
C. Main characteristic curves.
D. Impeller curves.
Answer = Main characteristic curves
60. The speed of the turbine in a constant head curve is varied by __________.
A. Temperature change.
B. Reaction speed change.
C. Changing the gate opening.
D. Wheel speed change.
Answer = Changing the gate opening
61. Constant speed curves travel at constant speed when the value is equal to _______.
A. 0.0.
B. 1.0.
C. 2.0.
D. 3.0.
Answer = 1.0
62. Power of a turbine is measured ______.
A. Mechanically.
B. Electrically.
C. Chemically.
D. Thermally.
Answer = Mechanically
63. Which among the following is not a parameter to determine the efficiency of the turbine?.
A. Unit speed.
B. Unit power.
C. Unit volume.
D. Unit discharge.
Answer = Unit volume
64. Which among the following is not an important parameter to determine the performance of the turbine?.
A. Speed.
B. Discharge.
C. Head.
D. Volume of tank.
Answer = Volume of tank
65. Which among the following is not a type of curve?.
A. Logarithimic curve.
B. Straight curve.
C. Pressure vs power.
D. Efficiency vs speed.
Answer = Pressure vs power
66. The inlet passage of water entry is controlled by ________.
A. Head race.
B. Gate.
C. Tail race.
D. Pump.
Answer = Gate
67. Overall efficiency vs what is drawn to determine the turbine performance?.
A. Unit Discharge.
B. Unit speed.
C. Unit power.
D. Unit pressure.
Answer = Unit speed
68. Constant discharge takes place due to _______.
A. Unit Discharge.
B. Unit speed.
C. Unit power.
D. Unit pressure.
Answer = Unit speed
69. All the characteristic curves are drawn with respect to __________.
A. Unit Discharge.
B. Unit speed.
C. Unit power.
D. Unit pressure.
Answer = Unit speed
70. Constant head curves are also called as _______.
A. Head race curves.
B. Tail race curves.
C. Main characteristic curves.
D. Impeller curves.
Answer = Main characteristic curves
71. In constant speed curves, the speed is kept a constant varying its head..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
72. In all the characteristic curves, the overall efficiency is aimed at the maximum value..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
73. Constant efficiency curves are plotted using _______.
A. Constant head curves.
B. Constant speed curves.
C. Main characteristic curves.
D. Constant speed and constant head.
Answer = Constant speed and constant head
74. Constant speed curves are also called as _______.
A. Main characteristic curves.
B. Turbine curves.
C. Tail race curves.
D. Impeller curves.
Answer = Tail race curves
75. Constant speed curve is denoted as _____.
A. T.
B. V.
C. c.
D. V.
Answer = c
76. Constant speed curves are ________.
A. Scalar quantities.
B. Vector quantities.
C. Constant quantities.
D. Different conditions.
Answer = Vector quantities
77. Constant speed is measured _________.
A. Mechanically.
B. Electrically.
C. Chemically.
D. Thermally.
Answer = Mechanically
78. Constant speed curves are determined by the _________.
A. Arc length.
B. Power.
C. Heat.
D. Temperature.
Answer = Heat
79. Which component is necessary for writing the velocity equation?.
A. Cos component.
B. Sine Component.
C. Cos and sine component.
D. Independent.
Answer = Cos and sine component
80. Which among the following is not a shape for a curve?.
A. Logarithmic curve.
B. Helix curve.
C. Straight curve.
D. Speed curve.
Answer = Speed curve
81. How do we plot points in a curve?.
A. Analytical approach.
B. General approach.
C. Tail approach.
D. Head approach.
Answer = Analytical approach
82. Plotting sine curve will take place along the _________.
A. y axis.
B. x axis.
C. z axis.
D. x and z.
Answer = x axis
83. In analytical approach, dp= __________.
A. vdt.
B. v.
C. dt.
D. dx.
Answer = vdt
84. The equation is general approach is called as central difference..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
85. The approximate value of the constant speed curve is given by ratio of ________.
A. dy/dp.
B. dx/dp.
C. dt/dx.
D. dt/dy.
Answer = dy/dp
86. In constant speed curves, the velocity is kept a constant varying its head..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = FALSE
87. The performance of a characteristic curve is kept at a high value..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
88. In nozzle governing, the flow rate of steam is regulated by _________.
A. Nozzles.
B. Pumping.
C. Drafting.
D. Intercooling.
Answer = Nozzles
89. The flow rate of steam is controlled by regulating the _________.
A. Steam.
B. Pressure.
C. Temperature.
D. Speed.
Answer = Pressure
90. The main function of nozzle is to __________.
A. Varying temperatures.
B. Pressure variations.
C. Load variations.
D. Heat variations.
Answer = Pressure variations
91. What is primary objective of steam turbine governing?.
A. Maintain constant speed.
B. Maintain constant pressure.
C. Maintain constant temperature.
D. Maintain constant expansion.
Answer = Maintain constant speed
92. What is the purpose of a steam turbine governing?.
A. Controls speed.
B. Controls flow rate.
C. Controls volume.
D. Controls discharge.
Answer = Controls flow rate
93. Which among the following control the flow rate?.
A. Valve.
B. Pump.
C. Head.
D. Tank pipe.
Answer = Valve
94. The advantage of nozzle governing is that no regulating pressure is applied..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
95. During the steam turbine governing, what remains a constant?.
A. Speed of rotation.
B. Flow rate.
C. Pump head.
D. Volume of fluid.
Answer = Speed of rotation
96. When do we apply by pass governing?.
A. When turbine is overloaded.
B. When Unit speed decreases.
C. When Unit power increases.
D. When Unit pressure decreases.
Answer = When turbine is overloaded
97. When bypass valve is opened to _______.
A. Increase Pressure.
B. Increase Unit speed.
C. Increase Unit power.
D. Increase the amount of fresh steam.
Answer = Increase the amount of fresh steam
98. What is the unit of steam rate?.
A. kg.
B. kg/m.
C. kg/kWh.
D. N/m.
Answer = kg/kWh
99. With the increase in load, Energy in the turbine ________.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Decreases
100. Combination governing involves usage of two or more governing..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
101. When the mechanical speed of the shaft increases beyond 110 percent, we use _________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
102. When the balancing of the turbine is disturbed, we use ________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
103. In nozzle governing, the flow rate of steam is regulated by _________.
A. Nozzles.
B. Pumping.
C. Drafting.
D. Intercooling.
Answer = Nozzles
104. The flow rate of steam is controlled by regulating the_________.
A. Steam.
B. Pressure.
C. Temperature.
D. Speed.
Answer = Pressure
105. The main function of nozzle is to __________.
A. Varying temperatures.
B. Pressure variations.
C. Load variations.
D. Heat variations.
Answer = Pressure variations
106. What is primary objective of steam turbine governing?.
A. Maintain constant speed.
B. Maintain constant pressure.
C. Maintain constant temperature.
D. Maintain constant expansion.
Answer = Maintain constant speed
107. Which among the following is not a parameter to determine the efficiency of the turbine?.
A. Unit speed.
B. Unit power.
C. Unit volume.
D. Unit discharge.
Answer = Unit volume
108. Which among the following control the flow rate?.
A. Valve.
B. Pump.
C. Head.
D. Tank pipe.
Answer = Valve
109. The advantage of nozzle governing is that no regulating pressure is applied..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
110. The inlet passage of water entry is controlled by ________.
A. Head race.
B. Gate.
C. Tail race.
D. Pump.
Answer = Gate
111. When do we apply by pass governing?.
A. When turbine is overloaded.
B. When Unit speed decreases.
C. When Unit power increases.
D. When Unit pressure decreases.
Answer = When turbine is overloaded
112. When bypass valve is opened to _______.
A. Increase Pressure.
B. Increase Unit speed.
C. Increase Unit power.
D. Increase the amount of fresh steam.
Answer = Increase the amount of fresh steam
113. What is the unit of steam rate?.
A. kg.
B. kg/m.
C. kg/kWh.
D. N/m.
Answer = kg/kWh
114. With the increase in load, Energy in the turbine ________.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Decreases
115. Combination governing involves usage of two or more governing..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
116. When the mechanical speed of the shaft increases beyond 110 percent, we use _________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
117. When the balancing of the turbine is disturbed, we use ________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
118. Centrifugal pump is a_________.
A. Turbomachinery.
B. Flow regulating device.
C. Drafting device.
D. Intercooling device.
Answer = Turbomachinery
119. Turbomachines work under ________.
A. Newtons first law.
B. Newtons second law.
C. Newtons third law.
D. Kepler’s law.
Answer = Newtons second law
120. The main function of nozzle is to __________.
A. Varying temperatures.
B. Pressure variations.
C. Load variations.
D. Heat variations.
Answer = Pressure variations
121. The main function of centrifugal pumps are to ________.
A. Transfer speed.
B. Transfer pressure.
C. Transfer temperature.
D. Transfer energy.
Answer = Transfer energy
122. Centrifugal pumps transfer energy from _______.
A. Rotor to fluid.
B. Fluid to rotor.
C. Draft to rotor.
D. Rotor to draft.
Answer = Rotor to fluid
123. Which among the following control the flow rate?.
A. Valve.
B. Pump.
C. Head.
D. Tank pipe.
Answer = Valve
124. Turbines and compressors work with the gas, while centrifugal pump transfers energy..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
125. The inlet passage of water entry is controlled by ________.
A. Head race.
B. Gate.
C. Tail race.
D. Pump.
Answer = Gate
126. Centrifugal pumps are a sub class of dynamic axisymmetric work absorbing turbomachinery..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
127. Centrifugal pumps are used to transport ________.
A. Pressure.
B. Speed.
C. Power.
D. Fluid.
Answer = Fluid
128. Centrifugal pumps transport fluids by converting _________.
A. Kinetic energy to hydrodynamic energy.
B. Hydrodynamic energy to kinetic energy.
C. Mechanical energy to kinetic energy.
D. Mechanical energy to Hydrodynamic energy.
Answer = Kinetic energy to hydrodynamic energy
129. With the increase in load, Energy in the turbine________.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Decreases
130. The rotational kinetic energy comes from ______.
A. Engine motor.
B. Pump.
C. Tank.
D. Draft tube.
Answer = Engine motor
131. When the balancing of the turbine is disturbed, we use ________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
132. The fluid coming into the centrifugal pump is accelerated by ________.
A. Throttle.
B. Impeller.
C. Nozzle.
D. Governor.
Answer = Impeller
133. A gear pump uses ___________.
A. Petrochemical pumps.
B. Meshing of gears.
C. Froth pumps.
D. Airlift pumps.
Answer = Meshing of gears
134. The fundamental significance of all the turbomachinery is _______.
A. Conservation of momentum.
B. Conservation of mass.
C. Conservation of heat.
D. Conservation of speed.
Answer = Conservation of momentum
135. The most common pump used for hydraulic fluid power application is __________.
A. Centrifugal pumps.
B. Gear pump.
C. Froth pumps.
D. Airlift pumps.
Answer = Gear pump
136. The change of angular momentum in a pump is equal to the _________.
A. Sum of speeds.
B. Sum of individual momentum.
C. Sum of temperatures.
D. Sum of energy transferred from a body.
Answer = Sum of individual momentum
137. Conservation of angular momentum is described by _______.
A. Newtons equation.
B. Euler’s equation.
C. Rutherford’s equation.
D. Maxim equation.
Answer = Euler’s equation
138. Gear pumps are mainly used in chemical installations because they pump ________.
A. High viscosity fluids.
B. High density fluids.
C. High pressure fluids.
D. High temperature fluids.
Answer = High viscosity fluids
139. Gear pumps convert rotational kinetic energy to hydrodynamic energy..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
140. The inlet passage of centrifugal pump is controlled by ________.
A. Gate.
B. Head race.
C. Turbine.
D. Pump.
Answer = Gate
141. Absolute exit velocity in a pump is denoted as ______.
A. c2.
B. v2.
C. p2.
D. w2.
Answer = c2
142. Gear pumps are used to transport ________.
A. Pressure.
B. Speed.
C. Power.
D. Fluid.
Answer = Fluid
143. Vertical Centrifugal pumps are also called as _________.
A. Cantilever pumps.
B. Hydrodynamic pump.
C. Mechanical pump.
D. Hydroelectric pump.
Answer = Cantilever pumps
144. With the increase in load, Energy in the turbine________.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Decreases
145. The rotational kinetic energy comes from ______.
A. Engine motor.
B. Pump.
C. Tank.
D. Draft tube.
Answer = Engine motor
146. When the balancing of the turbine is disturbed, we use ________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
147. Gear pumps are ___________.
A. Tangential flow pumps.
B. Positive displacement pumps.
C. Negative displacement pumps.
D. Radial pumps.
Answer = Tangential flow pumps
148. The fluid gains _________ while passing through the impeller..
A. Velocity.
B. Pressure.
C. Temperature.
D. Velocity and pressure.
Answer = Velocity and pressure
149. What is the shape of the diffuser in the centrifugal pump?.
A. Round.
B. Dough nut.
C. Rectangle.
D. Cylindrical.
Answer = Dough nut
150. When the casing in a centrifugal pump decelerates the flow, what increases?.
A. Pressure.
B. Temperature.
C. Volume.
D. Flow rate.
Answer = Pressure
151. The velocity imparted by the impeller is converted into _________.
A. Pressure energy.
B. Kinetic energy.
C. Momentum.
D. Potential energy.
Answer = Pressure energy
152. The consequence of Newtons second law is_________.
A. Conservation of angular momentum.
B. Conservation of mass.
C. Conservation of potential energy.
D. Conservation of kinetic energy.
Answer = Conservation of angular momentum
153. Change of angular momentum is equal to ________.
A. Sum of external moments.
B. Sum of their potential energies.
C. Sum of their kinetic energies.
D. Sum of their pressures.
Answer = Sum of external moments
154. Euler developed the head pressure equation in centrifugal pumps..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
155. What is a major advantage of centrifugal pump?.
A. Cost.
B. Simple in construction.
C. Efficiency.
D. Pump parameters.
Answer = Simple in construction
156. ‘Ht’ means _______.
A. Tangential head.
B. Horizontally head.
C. Theory head pressure.
D. Radially head pressure.
Answer = Theory head pressure
157. Centrifugal pumps are used to transport ________.
A. Pressure.
B. Speed.
C. Power.
D. Fluid.
Answer = Fluid
158. Different velocities in a centrifugal pump are determined by using ________.
A. Velocity triangle.
B. Reynolds number.
C. Froude number.
D. Overall efficiency.
Answer = Velocity triangle
159. Due to its impeller action, centrifugal pumps can cover a wide range of fluid pump applications..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
160. With the increase in the input power, efficiency _______.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Decreases
161. What is unit of standard acceleration?.
A. kg/m.
B. kg/s.
C. kg/m3.
D. N/m.
Answer = kg/m3
162. What does PSP stand for?.
A. Pump start procedure.
B. Positive start pump.
C. Pump start pointer.
D. Positive start pointer.
Answer = Pump start procedure
163. What is the unit of flow rate?.
A. kg.m.
B. kg/m.
C. m3/s.
D. /s.
Answer = m3/s
164. With the increase in the flow rate, efficiency ______.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Increases
165. Pump efficiency is defined as the ratio of ___________.
A. Pressure to temperature.
B. Temperature to pressure.
C. Water horsepower to pump horsepower.
D. Pump horse power to water horse power.
Answer = Water horsepower to pump horsepower
166. The difference in the total head of the pump is called _______.
A. Manometric head.
B. Euler head.
C. Pressure head.
D. Shaft head.
Answer = Manometric head
167. The ratio of manometric head to the work head is called _______.
A. Manometric head.
B. Euler head.
C. Pressure head.
D. Shaft head.
Answer = Euler head
168. What is the unit of energy head?.
A. m.
B. m/s.
C. m3/s.
D. /s.
Answer = m
169. With the increase in energy head, efficiency ________.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Increases
170. The head added by the pump is a sum of _________.
A. Pressure.
B. Static lift.
C. Volume.
D. Flow rate.
Answer = Static lift
171. Power is most commonly expressed as ________.
A. m.
B. kW.
C. m3/s.
D. /s.
Answer = kW
172. PHE stands for __________.
A. Pump Hydraulic efficiency.
B. Pressure Hydraulic efficiency.
C. Power Hydraulic efficiency.
D. Pump hydraulic engine.
Answer = Pump Hydraulic efficiency
173. Vertical centrifugal pumps are also called as cantilever pumps..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
174. With increase in power, the efficiency_________.
A. Decreases.
B. Increases.
C. Remains same.
D. Independent.
Answer = Decreases
175. Vertical pumps utilize unique shaft and bearing support configuration..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
176. Which among the following is used in mineral industries?.
A. Vertical pumps.
B. Horizontal pumps.
C. Froth pumps.
D. Multistage pumps.
Answer = Froth pumps
177. Vertical centrifugal pumps are also called as ________.
A. Froth pumps.
B. Multistage pumps.
C. Cantilever pumps.
D. Magnetic pumps.
Answer = Cantilever pumps
178. Vertical pump uses _______.
A. Draft tube.
B. Throttle bush.
C. Stuffing box.
D. Interlining.
Answer = Throttle bush
179. When the casing in a centrifugal pump decelerates the flow, what increases?.
A. Pressure.
B. Temperature.
C. Volume.
D. Flow rate.
Answer = Pressure
180. The maximum volumetric efficiency of a pump(100cc) is ________.
A. 0.6.
B. 0.7.
C. 0.8.
D. 0.9.
Answer = 0.9
181. The most common application of vertical centrifugal pump is used in _______.
A. Parts washer.
B. Mineral industry.
C. Paper plating.
D. Jukebox.
Answer = Parts washer
182. What does BEP stand for?.
A. Best efficiency point.
B. Brake ejection point.
C. Break effect point.
D. Best effect point.
Answer = Best efficiency point
183. The height of a column in a pump is called as _______.
A. Vertical head.
B. Horizontal head.
C. Static head.
D. Multi head.
Answer = Static head
184. The centrifugal pump has varying flow depending on the _________.
A. Pressure.
B. Static lift.
C. Volume.
D. Flow rate.
Answer = Pressure
185. What is purpose of froth in froth pumps?.
A. Separates rich minerals.
B. Mixes rich minerals.
C. Removes ores.
D. Detects oil.
Answer = Separates rich minerals
186. Froth contains air that blocks the pumps..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
187. When froth blocks the pump, it leads to _______.
A. Separation of rich minerals.
B. Mixing of rich minerals.
C. Removing of ores.
D. Loss of prime.
Answer = Loss of prime
188. What affects volumetric efficiency of the pump?.
A. Complex interactions.
B. Internal interactions.
C. Retain flow.
D. Air flow.
Answer = Complex interactions
189. The Positive Displacement Pump has more or less a constant flow regardless of the system pressure or head..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
190. What is the purpose of inducer in a froth pump?.
A. It recirculates air.
B. The pressurizes the air.
C. Froths are generated.
D. It breaks the bubbles.
Answer = It breaks the bubbles
191. A multistage centrifugal pumps has more than two _______.
A. Pumps.
B. Impellers.
C. Turbines.
D. Magnetic pumps.
Answer = Impellers
192. The impeller is mounted on a ________.
A. Draft tube.
B. Throttle bush.
C. Stuffing box.
D. Shaft.
Answer = Shaft
193. At each stage the fluid is directed ________.
A. Towards the centre.
B. Away the centre.
C. Towards the surface.
D. Away from the centre.
Answer = Towards the centre
194. If the cylinder is filled with fuel or air it is said to be ___________.
A. 100% efficient.
B. Transfer efficient.
C. Nil efficient.
D. Flow effective.
Answer = 100% efficient
195. SOH in a pump stands for_______.
A. Shut Off head.
B. Shut off heat.
C. Shut off hybrid.
D. Set off head.
Answer = Shut Off head
196. At higher pressures, the impeller is connected in _______.
A. Series.
B. Parallel.
C. Equilibrium.
D. Series and parallel.
Answer = Series
197. When the flow output is higher, impellers are connected in________.
A. Series.
B. Parallel.
C. Equilibrium.
D. Series and parallel.
Answer = Parallel
198. The point at which piping system controls the flow rate is called ______.
A. Pressure point.
B. Static lift.
C. Operating point.
D. Flow point.
Answer = Operating point
199. What is the common application of multistage centrifugal pump?.
A. Mineral industries.
B. Boiler feed water pump.
C. Removes ores.
D. Detects oil.
Answer = Boiler feed water pump
200. A multistage centrifugal pump produces a pressure of __________.
A. 10 Pa.
B. 100 MPa.
C. 21 MPa.
D. 150 MPa.
Answer = 21 MPa
201. All energy that is transferred from the fluid is derived from ________.
A. Electrical energy.
B. Mechanical energy.
C. Thermal energy.
D. Chemical energy.
Answer = Mechanical energy
202. The point at which the centrifugal pump operates at maximum efficiency is called _______.
A. Duty point.
B. Flow point.
C. Static point.
D. Operating point.
Answer = Duty point
203. The energy transferred can be measured by isentropic compression..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
204. What does TDH stand for?.
A. Total dynamic head.
B. Total depth head.
C. Tight drum head.
D. Target dynamic head.
Answer = Total dynamic head
205. The mechanical energy is developed by the impeller..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
206. The mechanical energy can be measured by ______.
A. Adiabatic expansion.
B. Isentropic compression.
C. Adiabatic compression.
D. Isentropic expansion.
Answer = Isentropic compression
207. How many impellers does a multistage centrifugal pump have?.
A. Zero.
B. One.
C. Exactly two.
D. Two and more.
Answer = Two and more
208. The energy usage in pumping installation is determined by _______.
A. Friction characteristics.
B. Pipe diameter.
C. Surface tension.
D. Thermal expansion.
Answer = Friction characteristics
209. Which among the following is a friction factor?.
A. Newtons factor.
B. Darcy’s factor.
C. Transfer temperature.
D. Heizenberg’s factor.
Answer = Darcy’s factor
210. What is the dimension for Darcy’s friction factor?.
A. kg/m.
B. N/mm.
C. kg.
D. Dimensionless.
Answer = Dimensionless
211. Formation of bubbles in an impeller is called ______.
A. Cavities.
B. Defects.
C. Friction.
D. Heat burn.
Answer = Cavities
212. Centrifugal pump works by imparting _______.
A. Potential energy.
B. Kinetic energy.
C. Heat energy.
D. Electrical energy.
Answer = Kinetic energy
213. What is the full form of NPSH in a pump?.
A. Net pressure suction head.
B. Net positive suction head.
C. Non-pressure suction head.
D. Net pressure super head.
Answer = Net positive suction head
214. When the NPSH is low, it leads to ________.
A. Breaking.
B. Wear.
C. Corrosion.
D. Cavitation.
Answer = Cavitation
215. Wear of impeller can be worsened by __________.
A. Draft tube.
B. Pump pressure.
C. Suspended solenoids.
D. Turbine head.
Answer = Suspended solenoids
216. Which pump is the most efficient centrifugal pump?.
A. Electrical pump.
B. Reciprocating pump.
C. Heat pump.
D. Pressure pump.
Answer = Reciprocating pump
217. Corrosion in the pump is developed due to _______.
A. Pressure of air.
B. Fluid properties.
C. Draft tube.
D. Tank dimensions.
Answer = Fluid properties
218. Over heating is a major problem faced in a pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
219. What is the effect of cavitation in boat propeller?.
A. It recirculates air.
B. The pressurizes the air.
C. It leads to fast spinning.
D. It breaks the bubbles.
Answer = It leads to fast spinning
220. Lack of prime is a problem faced in centrifugal pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
221. The energy usage of a pump is determined by _______.
A. Adiabatic expansion.
B. Power required.
C. Adiabatic compression.
D. Isentropic expansion.
Answer = Power required
222. For an oil field to have solid control, it needs _______.
A. Draft tubes.
B. Throttle bush.
C. Stuffing box.
D. Centrifugal pumps.
Answer = Centrifugal pumps
223. If we lower the temperature, the water pump cavitation ________.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Decreases
224. Which among the following is not a centrifugal pump?.
A. Sand pumps.
B. Froth pumps.
C. Slurry pumps.
D. Energy pumps.
Answer = Energy pumps
225. Centrifugal pumps work under the same principle, but differ in their _______.
A. Working.
B. Functions.
C. Dimensions.
D. Impeller.
Answer = Functions
226. If we raise the liquid level in the suction vessel, cavitation ______.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Decreases
227. Magnetic coupled pumps are also called as _________.
A. Series pumps.
B. Parallel pumps.
C. Froth pumps.
D. Drive pumps.
Answer = Drive pumps
228. Magnetic coupled pumps works via ________.
A. Antiferromagnet.
B. Drive magnet.
C. Pump magnet.
D. Ferromagnet.
Answer = Drive magnet
229. When we change the pump, the cavitation ______.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Decreases
230. If we reduce the motor rpm in an impeller, cavitation _______.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Decreases
231. Decreasing the diameter of the eye of the impeller, cavitation _________.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Increases
232. No gland is needed for the centrifugal pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
233. Pump is always supported by bearings..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = FALSE
234. If we use an impeller inducer, we can reduce the cavitation in a centrifugal pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
235. There will be leakage only if there is ________.
A. High pressure.
B. High temperature.
C. Froths are generated.
D. Casing breakage.
Answer = Casing breakage
236. When a pump casing is filled with liquid before it is started, it is called as _________.
A. Adiabatic expansion.
B. Priming.
C. Adiabatic compression.
D. Isentropic expansion.
Answer = Priming
237. The pump will become incapable of pumping in case of _______.
A. Gas bounding.
B. Throttle bush.
C. Stuffing box.
D. Casing breakage.
Answer = Casing breakage
238. Priming is needed when impeller cannot impart enough _________.
A. Draft speed.
B. Energy.
C. Pressure.
D. Heat.
Answer = Energy
239. Priming performs response using ________.
A. Stimulus.
B. Froth.
C. Slurry.
D. Heat.
Answer = Stimulus
240. To avoid gas bounding, the pump is _________.
A. Heated.
B. Elevated.
C. Primed.
D. Charged.
Answer = Primed
241. Centrifugal pumps are located ________ the level of source.
A. Below.
B. Above.
C. Parallel with.
D. Series with.
Answer = Below
242. A pump that can evacuate air is called as _________.
A. Series pumps.
B. Self priming pumps.
C. Froth pumps.
D. Drive pumps.
Answer = Self priming pumps
243. What does CPO stand for?.
A. Centrifugal pump operation.
B. Centrifugal part operation.
C. Centrifugal pump output.
D. Centrifugal part output.
Answer = Centrifugal pump operation
244. Self priming pumps overshadow the function of __________.
A. Self auxiliary device.
B. Wear rate.
C. Corrosion device.
D. Cavitation device.
Answer = Self auxiliary device
245. What is necessary for self priming to take place?.
A. Draft tube.
B. Pump casing.
C. Suspended solenoids.
D. Turbine head.
Answer = Pump casing
246. Centrifugal pumps with an internal suction stage are called as _________.
A. Series pumps.
B. Self priming pumps.
C. Froth pumps.
D. Drive pumps.
Answer = Self priming pumps
247. Two phase mixture is pumped unit the suction line is evacuated..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
248. During normal working operation, the pump works like __________.
A. Centrifugal pumps.
B. Self priming pumps.
C. Froth pumps.
D. Drive pumps.
Answer = Centrifugal pumps
249. The pump function that works on rinsing is called as dialysis of pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
250. What is purpose of vent valve in a pump?.
A. High pressure control.
B. High temperature control.
C. Froths are generated can be minimized.
D. To prevent siphon action.
Answer = To prevent siphon action
251. In hydraulic head, NPSH is used for the analysis of __________.
A. Adiabatic expansion.
B. Priming.
C. Wear.
D. Cavitation.
Answer = Cavitation
252. NPSH is the difference between _______.
A. Suction pressure and vapour pressure.
B. Vapour pressure and suction pressure.
C. Suction pressure and heat.
D. Shaft and head.
Answer = Suction pressure and vapour pressure
253. What can NPSH be used to determine _______.
A. Friction characteristics.
B. Pipe diameter.
C. Cavitation.
D. Thermal expansion.
Answer = Cavitation
254. The measure of how close the fluid is to the given point is called _________.
A. Flashing.
B. Darcy’s factor.
C. Transfer temperature.
D. Heizenberg’s factor.
Answer = Flashing
255. What is the dimension for Darcy’s friction factor?.
A. kg/m.
B. N/mm.
C. kg.
D. Dimensionless.
Answer = Dimensionless
256. NPSH is relevant ________.
A. Outside the pumps.
B. Inside the pumps.
C. Away from the pumps.
D. Series and parallel with the pumps.
Answer = Outside the pumps
257. With the increase in cavitation, the drag coefficient of the impeller ______.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Increases
258. What is the full form of NPSH in a pump?.
A. Net pressure suction head.
B. Net positive suction head.
C. Non-pressure suction head.
D. Net pressure super head.
Answer = Net positive suction head
259. When the NPSH is low, it leads to ________.
A. Breaking.
B. Wear.
C. Corrosion.
D. Cavitation.
Answer = Cavitation
260. What is positive suction head?.
A. Draft tube is above.
B. Pump pressure is above.
C. Liquid level is above.
D. Turbine head is above.
Answer = Liquid level is above
261. NPSHr is determined by using ______.
A. Pump pressure.
B. PumpLinx.
C. Heat transfer.
D. Chemical energy.
Answer = PumpLinx
262. Corrosion in the pump is developed due to _______.
A. Pressure of air.
B. Fluid properties.
C. Draft tube.
D. Tank dimensions.
Answer = Fluid properties
263. Calculation of NPSH in a turbine is different from the calculation of NPSH in a pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
264. If we use two lower capacity pumps in parallel, cavitation ________.
A. Increases.
B. Decreases.
C. Same.
D. Independent.
Answer = Decreases
265. Vapour pressure is strongly dependent on temperature in a pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
266. Reciprocating pump is a ________.
A. Negative displacement pump.
B. Positive displacement pump.
C. Diaphragm pump.
D. Emulsion pump.
Answer = Positive displacement pump
267. What happens to the reciprocating pump when left untouched?.
A. Efficiency decreases.
B. Wear and tear.
C. Surface expansion.
D. Pressure change.
Answer = Surface expansion
268. Reciprocating pumps operate by drawing ______ into the chamber.
A. Liquid.
B. Pressure.
C. Heat.
D. Electricity.
Answer = Liquid
269. The cylinder of reciprocating cylinder is made up of _______.
A. Cast iron.
B. Wrought iron.
C. Aluminium.
D. Copper.
Answer = Cast iron
270. The higher discharge valve line holds the discharge valve ________.
A. Open.
B. Closed.
C. Stop functioning.
D. Automatic.
Answer = Closed
271. Reciprocating pumps are also called as __________.
A. Force pumps.
B. Mass Pumps.
C. Heat pumps.
D. Speed pumps.
Answer = Force pumps
272. Reciprocating pumps are classified according to ___________.
A. Drag force.
B. Number of cylinders.
C. Shock waves.
D. Flow speed.
Answer = Number of cylinders
273. Simple hand operating pump is also called as ______.
A. Froth pump.
B. Bicycle pump.
C. Multistage pumps.
D. Centrifugal pumps.
Answer = Bicycle pump
274. Internal cavitation in reciprocating pumps occurs due to __________.
A. Drag force.
B. Cyclic stress.
C. Shock waves.
D. Flow speed.
Answer = Shock waves
275. Bicycle pump generates more compression than volume displacement..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
276. Power operated pump in which only one side engages the fluid displacement is called _______.
A. Froth pump.
B. Single acting.
C. Double acting.
D. Bicycle pump.
Answer = Single acting
277. Operation of reciprocating motion is done by a ________ source.
A. Power.
B. Energy.
C. Momentum.
D. Inertia.
Answer = Power
278. An up and down back and forth relative linear motion is called __________.
A. Reciprocation.
B. Rotation.
C. Filtration.
D. Excavation.
Answer = Reciprocation
279. Power operated pump in which only both sides engage the fluid displacement is called _____.
A. Froth pump.
B. Single acting.
C. Double acting.
D. Bicycle pump.
Answer = Double acting
280. High pressure reciprocating pumps are generally from 1500 HP..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
281. How many number of valves are required for the rotary pump?.
A. 0.0.
B. 1.0.
C. 2.0.
D. 3.0.
Answer = 0.0
282. Reciprocating pump is divided into how many types, based on its cylinders?.
A. 0.0.
B. 5.0.
C. 2.0.
D. 3.0.
Answer = 5.0
283. At each stage the fluid is directed ________.
A. Towards the centre.
B. Away the centre.
C. Towards the surface.
D. Away from the centre.
Answer = Towards the centre
284. The maximum efficiency of the reciprocating pump is _________.
A. 20.0.
B. 50.0.
C. 70.0.
D. 85.0.
Answer = 85.0
285. The two opposite motion that comprise a single reciprocation is called _________.
A. Turbocharger.
B. Stokes.
C. Fluid motion.
D. Auto motion.
Answer = Turbocharger
286. Reciprocating pumps has ____ efficiency compared to centrifugal pumps.
A. Higher.
B. Lower.
C. Equal.
D. Exponential.
Answer = Lower
287. Reciprocating pumps works on the principle of __________.
A. Drag force.
B. Liquid flow push.
C. Shock waves.
D. Flow speed.
Answer = Liquid flow push
288. Reciprocating pump is a type of ___________.
A. Positive displacement pump.
B. Bicycle pump.
C. Multistage pumps.
D. Centrifugal pumps.
Answer = Positive displacement pump
289. During the suction stroke the _______ moves left thus creating vacuum in the Cylinder..
A. Piston.
B. Cylinder.
C. Valve.
D. Pump.
Answer = Piston
290. In reciprocating pumps, the chamber in which the liquid is trapped is a stationary cylinder that contains piston or cylinder.
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
291. Reciprocating pump works like a positive displacement pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
292. When both the sources are effective it is called as __________.
A. Double acting pump.
B. Single acting pump.
C. Triple acting pump.
D. Normal pump.
Answer = Double acting pump
293. A repetitive variation about the central value of equilibrium is called ________.
A. Reciprocation.
B. Oscillation.
C. Filtration.
D. Excavation.
Answer = Oscillation
294. A linear wheel turning motion is called as a ________.
A. Reciprocation.
B. Rotation.
C. Oscillation.
D. Bicycle pump.
Answer = Rotation
295. A reciprocating pump that has 1200 crank is _________.
A. Froth pump.
B. Single acting.
C. Double acting.
D. Triple acting.
Answer = Triple acting
296. In a positive displacement pump, what gets displaced?.
A. Fluid.
B. Volume.
C. Pressure.
D. Temperature.
Answer = Volume
297. What happens to the reciprocating pump when left untouched?.
A. Efficiency decreases.
B. Wear and tear.
C. Surface expansion.
D. Pressure change.
Answer = Surface expansion
298. Positive displacement pumps are capable of developing ______ pressures, in _______ suction pressure..
A. High, low.
B. Low, high.
C. High, high.
D. Low, low.
Answer = High, low
299. When is a reciprocating pump used?.
A. When quantity of liquid is small.
B. When quantity of liquid is large.
C. To pump high pressure.
D. To pump low pressure.
Answer = When quantity of liquid is small
300. Positive displacement pumps are also called as__________.
A. Constant pressure pump.
B. Pressure drag pumps.
C. Constant volume pumps.
D. Constant head pumps.
Answer = Constant volume pumps
301. At high pressure, the voids can generate ______.
A. Drag force.
B. Mass density.
C. Shock waves.
D. Flow speed.
Answer = Shock waves
302. In centrifugal pumps, their capacity is affected due to___________.
A. Drag force.
B. Cyclic stress.
C. Shock waves.
D. Pressure.
Answer = Pressure
303. A quantity of fluid that leaks from a higher pressure discharge to a lower pressure discharge is called______.
A. Slip.
B. Heat.
C. Friction.
D. Enthalpy.
Answer = Slip
304. Positive displacement pumps regulate the flow by varying its ________.
A. Drag force.
B. Cyclic stress.
C. Shock waves.
D. Flow speed.
Answer = Flow speed
305. Positive displacement pumps are divided into two types..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
306. Centrifugal pump is less efficient than a reciprocating pump because of its _______.
A. Temperature.
B. Speed.
C. Heat.
D. Cost.
Answer = Cost
307. Simplest example of single acting reciprocating pump is _______.
A. Mineral ores.
B. Whirl wheels.
C. Bicycle tires.
D. Syringe.
Answer = Syringe
308. Rotary pumps do not function well under _______.
A. High Vaporisation.
B. High Sedimentation.
C. High viscosity.
D. Excavation.
Answer = High viscosity
309. The parameter that disturbs the working of the rotary pump is______.
A. High Vaporisation.
B. High Sedimentation.
C. Low flow rate.
D. Excavation.
Answer = Low flow rate
310. In a double acting reciprocating pump, the piston carries suction and expulsion at the same time..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
311. Rotary pumps are commonly used to circulate________.
A. Lube oils.
B. Petroleum.
C. Diesel.
D. Water.
Answer = Lube oils
312. Reciprocating pump is divided into how many types, based on its cylinders?.
A. 0.0.
B. 5.0.
C. 2.0.
D. 3.0.
Answer = 5.0
313. How many number of valves are required for the rotary pump?.
A. 0.0.
B. 1.0.
C. 2.0.
D. 3.0.
Answer = 0.0
314. Capacity of a rotary pump is defined as _________.
A. Total liquid displaced.
B. Overall performance of pump.
C. Maximum fluid flow.
D. Minimum fluid flow.
Answer = Total liquid displaced
315. The pump that converts mechanical energy into hydraulic energy is called as _________.
A. Turbomachinery.
B. Centrifugal pump.
C. Aerodynamics.
D. Auto pump.
Answer = Centrifugal pump
316. What type of flow does the reciprocating pump have?.
A. Uniform.
B. Continuous.
C. Pulsating.
D. Non-uniform.
Answer = Continuous
317. What is the full form of PD?.
A. Positive displacement.
B. Pump displacement.
C. Plunger displacement.
D. Plunger direct.
Answer = Positive displacement
318. Why can’t rotary pumps non-lubricate water?.
A. Because it has lesser viscosity.
B. Because it contains abrasive particles.
C. Multistage pumps are difficult to operate.
D. Draft tube is thin.
Answer = Because it contains abrasive particles
319. The maximum speed of reciprocating pump is __________.
A. 20m/min.
B. 30m/min.
C. 40m/min.
D. 50m/min.
Answer = 30m/min
320. Pumps require clearances because of machining tolerances or wear exhibits larger slip..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
321. The pump that uses a relatively smaller amount of liquid is called ________.
A. Froth pump.
B. Reciprocating pump.
C. Double acting.
D. Bicycle pump.
Answer = Reciprocating pump
322. Sliding vanes in pumps are held by ________.
A. Draft pins.
B. Whirl wheels.
C. Springs.
D. Nails.
Answer = Springs
323. Air vessel accumulates excess quantity of ______.
A. Vapor.
B. Water.
C. Heat.
D. Pressure.
Answer = Water
324. In which pump is the liquid in contact with both the sides of the plunger_____.
A. Froth pump.
B. Single acting.
C. Double acting.
D. Bicycle pump.
Answer = Double acting
325. The sliding vane is capable of delivering medium capacity and heat..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
326. When a cylinder has inlet and outlet ports at each end, then it is called as __________.
A. Double acting.
B. Air lift pumps.
C. Reciprocating pumps.
D. Centrifugal pumps.
Answer = Double acting
327. Turbomachines work under ________.
A. Newtons first law.
B. Newtons second law.
C. Newtons third law.
D. Kepler’s law.
Answer = Newtons second law
328. The main function of nozzle is to __________.
A. Varying temperatures.
B. Pressure variations.
C. Load variations.
D. Heat variations.
Answer = Pressure variations
329. When the piston moves forward, liquid is drawn ________.
A. Into the cylinder.
B. Away from the cylinder.
C. Into the draft tube.
D. Away from the draft tube.
Answer = Into the cylinder
330. The pump injects compressed air at the _________.
A. Rotor pipe.
B. Bottom of the discharge pipe.
C. Top of the discharge pipe.
D. Rotor to draft.
Answer = Bottom of the discharge pipe
331. In a reciprocating pump, with the change in discharge pressure, ________.
A. The Volume delivered increases.
B. The volume delivered decreases.
C. Volume delivered remains the same.
D. Volume delivered is independent.
Answer = Volume delivered remains the same
332. The compressed air mixes with the liquid casing to become less dense..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
333. The amount of fluid that leaks internally is called ________.
A. Head race.
B. Slip.
C. Tail race.
D. Internal friction.
Answer = Slip
334. Airlift pumps are widely used in aquaculture to pump..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
335. Centrifugal pumps are used to transport ________.
A. Pressure.
B. Speed.
C. Power.
D. Fluid.
Answer = Fluid
336. For a good condition, slip should be________.
A. Below 1 percent.
B. 1 to 2 percent.
C. 3 to 4 percent.
D. Above 5 percent.
Answer = Below 1 percent
337. If the slip is above 5 percent, the pumps needs to be ______.
A. Dragged.
B. Overhauled.
C. Retracted.
D. Intermittent.
Answer = Overhauled
338. The rotational kinetic energy comes from ______.
A. Engine motor.
B. Pump.
C. Tank.
D. Draft tube.
Answer = Engine motor
339. When the balancing of the turbine is disturbed, we use ________.
A. Throttle governing.
B. Steam governing.
C. Nozzle governing.
D. Emergency governing.
Answer = Emergency governing
340. Slip in a pump depends on which of following parameters?.
A. Wear.
B. Pressure.
C. Temperature.
D. Heat.
Answer = Wear
341. A pressure vessel is used to hold _______.
A. Air.
B. Gases.
C. Molecules.
D. Solids.
Answer = Gases
342. Why do we need a maximum safe operating pressure?.
A. Pressure vessel might explode.
B. Temperature increase needs to be controlled.
C. Heat transfer is rejected.
D. Improve overall efficiency.
Answer = Pressure vessel might explode
343. When is a reciprocating pump used?.
A. When quantity of liquid is small.
B. When quantity of liquid is large.
C. To pump high pressure.
D. To pump low pressure.
Answer = When quantity of liquid is small
344. The maximum efficiency of the reciprocating pump is _________.
A. 20.0.
B. 50.0.
C. 70.0.
D. 85.0.
Answer = 85.0
345. A tank that is used to protect closed water heating systems is called ________.
A. Pressure vessel.
B. Expansion vessel.
C. Heat vessel.
D. Auto vessel.
Answer = Expansion vessel
346. How is the construction of the vessel tested?.
A. Uniform testing.
B. Continuous testing.
C. Pulsating test.
D. Non-destructive testing.
Answer = Non-destructive testing
347. What does BPVC stand for?.
A. Boiler and pressure vessel code.
B. Boiler and pump vessel code.
C. Boiler and pressure vessel clutch.
D. Boiler and pump vessel clutch.
Answer = Boiler and pressure vessel code
348. Which of the following is not an NDT type?.
A. Ultrasonic.
B. Liquid penetrant.
C. Visual.
D. Hammer test.
Answer = Hammer test
349. What is the full form of NDI?.
A. Non-destructive intern.
B. Non-destructive inspection.
C. Non-destructive inkling.
D. Non-destructive inertia.
Answer = Non-destructive inspection
350. NDT is a money and time saving technique..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
351. Where is the excess quantity of water from the pump accumulated?.
A. Froth tube.
B. Draft tube.
C. Air vessels.
D. Bicycle pump.
Answer = Air vessels
352. NDT relies upon _________.
A. Electromagnetic radiation.
B. Heat.
C. Pressure change.
D. Temperature.
Answer = Electromagnetic radiation
353. What is the shape of a pressure vessel?.
A. Square.
B. Spheres.
C. Cones.
D. All the shapes.
Answer = All the shapes
354. Safety valve is used to ensure that the pressure in the vessels is not exceeded..
A. TRUE.
B. FALSE.
C. Nothing can be said.
D. None of the mentioned.
Answer = TRUE
355. Pressure vessel closures are used to _________.
A. Avoid breakage.
B. Avoid leakage.
C. Retain structures.
D. Maintain pressure.
Answer = Retain structures
356. The hydraulic press is also known as _________ press.
A. Pascal.
B. Toricelli.
C. Bernouille.
D. Bramah.
Answer = Bramah
357. The underlying principle behind a hydraulic press is based on ______ principle.
A. Bramah’s.
B. Pascal’s.
C. Stoke’s.
D. Newton’s.
Answer = Pascal’s
358. In a hydraulic press, the pump acts as a _________.
A. Piston.
B. Motor.
C. Tubing.
D. Cylinder.
Answer = Piston
359. A hydraulic press makes use of a _________.
A. hydraulic pump.
B. hydraulic cylinder.
C. hydraulic accumulator.
D. hydraulic shaft.
Answer = hydraulic cylinder
360. In a hydraulic press, the metal can be _______.
A. Crushed.
B. Straightened.
C. Molded.
D. Crushes, straightened and molded.
Answer = Crushes, straightened and molded
361. The cylinder with the smaller diameter Is called _________.
A. Slave cylinder.
B. Master cylinder.
C. Working cylinder.
D. Casting Cylinder.
Answer = Slave cylinder
362. A ________ is the main essence of a car crushing system..
A. hydraulic press.
B. hydraulic cylinder.
C. hydraulic crane.
D. accumulator.
Answer = hydraulic press
363. The cylinder having the larger diameter is called _______ cylinder..
A. Slave.
B. Master.
C. Cage.
D. Pump.
Answer = Master
364. A ________ is a storage reservoir under pressure where a liquid is held under pressure..
A. Hydraulic accumulator.
B. Hydraulic crane.
C. Hydraulic gear.
D. Hydraulic pump.
Answer = Hydraulic accumulator
365. The most frequently used accumulator type is ________.
A. Liquid accumulator.
B. Solid accumulator.
C. Compressed gas accumulator.
D. Plasma accumulator..
Answer = Compressed gas accumulator
366. The first accumulators for Armstrong’s hydraulic dock machinery were ________ which is placed raised..
A. oil towers.
B. gas towers.
C. water towers.
D. plasma towers.
Answer = water towers
367. ________ is the simplest form of an accumulator..
A. air filled.
B. oil filled.
C. water filled.
D. gas filled.
Answer = air filled
368. ________ invented the compressed air accumulator..
A. Reynold.
B. Braman.
C. Pascal.
D. Jean Mercier.
Answer = Jean Mercier
369. The inert gas used in gas compressed accumulator is usually _______.
A. Sulphur.
B. Nitrogen.
C. Oxygen.
D. Carbon dioxide.
Answer = Nitrogen
370. Spring type accumulator works on the principle of ______.
A. Bernouille’s law.
B. Charles’ law.
C. Hooke’s law3.
D. Pascal’s law.
Answer = Hooke’s law3
371. A __________ is a hydraulic machine for converting hydraulic power at low pressure into a reduced volume at higher pressure..
A. Hydraulic Ram.
B. Hydraulic crane.
C. Hydraulic Intensifier.
D. Hydraulic accumulator.
Answer = Hydraulic Intensifier
372. If the diameters of the two pistons used in the arrangement are different, the _______ in each cylinder will vary..
A. Hydraulic velocities.
B. Hydraulic acceleration.
C. Hydraulic pressure.
D. Hydraulic force.
Answer = Hydraulic pressure
373. The working volume of the intensifier is restricted by the stroke of the ________.
A. Piston.
B. Shaft.
C. Jack.
D. Cylinder.
Answer = Piston
374. Intensifiers are employed as a part of machines such as ________.
A. Hydraulic presses.
B. Hydraulic Crane.
C. Hydraulic accumulator.
D. Hydraulic Ram.
Answer = Hydraulic presses
375. Small intensifiers usually have a ________ in their basic system..
A. Stepped piston.
B. Stepped cylinder.
C. Accumulator.
D. Stepped presses.
Answer = Stepped piston
376. Most commonly used hydraulic intensifier for water jet cutting is _________.
A. Inline hydraulic intensifier.
B. Parallel hydraulic intensifier.
C. Pressed hydraulic intensifier.
D. Casting hydraulic intensifier.
Answer = Inline hydraulic intensifier
377. When the intensifier is placed outside its jack, it produces higher ________.
A. Pressure.
B. Force.
C. Displacement.
D. Momentum.
Answer = Pressure
378. A ________ is a cyclic water pump that derives its power from hydroelectric sources..
A. Hydraulic crane.
B. Hydraulic Ram.
C. Hydraulic Accumulator.
D. Hydraulic presses.
Answer = Hydraulic Ram
379. A hydraulic ram uses the _______ effect to develop pressure..
A. Water hammer.
B. Pascal’s law.
C. Bernouille’s.
D. Toricelli’s.
Answer = Water hammer
380. Hydraulic Ram is used in areas where there is a source of ________ power..
A. Thermal.
B. Hydroelectric.
C. Biogas.
D. Solar.
Answer = Hydroelectric
381. The typical efficiency of a hydraulic ram is ____.
A. 0.5.
B. 0.6.
C. 0.7.
D. 0.8.
Answer = 0.6
382. _______ aids in cushioning the shock of the hydraulic pressure during the working of the hydraulic ram.
A. Pressure vessel.
B. air bags.
C. inlet valve.
D. Drive pipe.
Answer = Pressure vessel
383. ___________ restricts the dissolution of the pressurized air into the water..
A. Elastic diaphragm.
B. Pressure vessel.
C. Inlet pipe.
D. Waste valve.
Answer = Elastic diaphragm
384. One of the main reasons why the cycling stops in the hydraulic ram is due to poor adjustment of ________.
A. pressure vessel.
B. diaphragm.
C. waste valve.
D. water hammer.
Answer = waste valve
385. An alternate option to the hydraulic ram is _________.
A. water-powered pump.
B. Oscillating pump.
C. Inlet pressure pump.
D. Water vessel pump.
Answer = water-powered pump
386. In a hydraulic lift ______ is fixed on the crown of the sliding ram where the carried load is located..
A. Cage.
B. Wire rope.
C. Pulleys.
D. Jiggers.
Answer = Cage
387. When fluid is subjected to _______ it is pushed into the cylindrical chamber which gives the ram gets a push in the upward direction..
A. Pressure.
B. Force.
C. Momentum.
D. Acceleration.
Answer = Pressure
388. ______ is attached to the fixed cylindrical chamber which moves in the upward or downward direction..
A. Jiggers.
B. Sliding Ram.
C. Crown.
D. Pulley.
Answer = Sliding Ram
389. The two types of pulleys in a hydraulic lift are ______ and ______.
A. fixed, fixed.
B. movable, fixed.
C. movable, movable.
D. semi-movable, movable.
Answer = movable, fixed
390. _________ is attached to the wall of the floor, where the sliding ram moves upwards or downwards depending on how the pressure is applied..
A. Cage.
B. Fixed cylinder.
C. Pulleys.
D. shaft.
Answer = Fixed cylinder
391. Working period is defined as the ratio of the height of lift to the ___________.
A. acceleration of the lift.
B. pressure of the lift.
C. velocity of the lift.
D. displacement of the lift..
Answer = velocity of the lift
392. Idle period of lift is defined as the difference of the total time taken for one operation and the _____ of the lift..
A. Working period.
B. Stationary period.
C. Active period.
D. Passive period.
Answer = Working period
393. Due to the arrangement of hydraulic jigger; the ________ rotates.
A. Fixed cylinder.
B. Sliding contact.
C. Fluid.
D. Pulley.
Answer = Pulley
394. In a hydraulic system the development of pressure is by variable displacement pump and _____.
A. stationary pump.
B. fixed pump.
C. gear pump.
D. motor pump.
Answer = gear pump
395. In a hydraulic crane, _____ is the component mainly responsible for lifting..
A. Boom.
B. Counter-weights.
C. Jib.
D. Rotex Gear.
Answer = Boom
396. ________ helps in indicating the maximum lifting limit of the crane..
A. Jib.
B. Gear.
C. Shaft.
D. Load moment indicator.
Answer = Load moment indicator
397. Out of the ____ , a lattice structure called jib projects out..
A. Boom.
B. Pump.
C. Gear.
D. Out-triggers.
Answer = Boom
398. ________ allows the rotation of the boom..
A. Rotex gear.
B. Jib.
C. Motor.
D. Pump.
Answer = Rotex gear
399. _______ restricts the crane from tipping.
A. Gear.
B. Indicator.
C. Counterweights3.
D. Boom.
Answer = Counterweights3
400. The pressure generated by a counterweight gear pump is ______.
A. 1200 psi.
B. 1300 psi.
C. 1400 psi.
D. 1500 psi.
Answer = 1400 psi
401. A pump that has low suction and moderate discharge is called _______.
A. Froth pumps.
B. Air lift pumps.
C. Reciprocating pumps.
D. Centrifugal pumps.
Answer = Air lift pumps
402. Turbomachines work under ________.
A. Newtons first law.
B. Newtons second law.
C. Newtons third law.
D. Kepler’s law.
Answer = Newtons second law
403. The main function of nozzle is to __________.
A. Varying temperatures.
B. Pressure variations.
C. Load variations.
D. Heat variations.
Answer = Pressure variations