MCQOPTIONS
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MCQOPTIONS
This section includes 243 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
TOPIC 5.2 AXIAL, RADIAL AND MIXED FLOW TURBINES. |
| A. | guide vane angle at inlet |
| B. | blade angle at inlet |
| C. | vane angle at inlet |
| D. | blade angle at outlet |
| Answer» B. blade angle at inlet | |
| 102. |
Which of the following profiles are used for guide vanes to ensure smooth flow without separation? |
| A. | rectangular |
| B. | bent rectangular |
| C. | elliptical |
| D. | aerofoil |
| Answer» E. | |
| 103. |
Which of the following is true in case of flow of water before it enters the runner of a Francis Turbine? |
| A. | available head is entirely converted to velocity head |
| B. | available head is entire converted to pressure head |
| C. | available head is neither converted to pressure head nor velocity head |
| D. | available head is partly converted to pressure head and partly to velocity head |
| Answer» E. | |
| 104. |
In which of the following type of runners the velocity of whirl at inlet is greater than the blade velocity? |
| A. | such a case is practically impossible |
| B. | slow runner |
| C. | medium runner |
| D. | fast runner |
| Answer» C. medium runner | |
| 105. |
runner in a Francis turbine? |
| A. | axial and then tangential |
| B. | tangential and then axial |
| C. | radial and then axial |
| D. | axial and then radial |
| Answer» D. axial and then radial | |
| 106. |
Which of the following pump suitable for handling AMF in the dairy industry? |
| A. | centrifugal pump |
| B. | liquid ring pump |
| C. | diaphragm pump |
| D. | peristaltic pumps |
| Answer» E. | |
| 107. |
Main application of positive displacement pump is in which of the following? |
| A. | low viscosity products |
| B. | heavily aerated liquids |
| C. | gentle treatment with high viscosity |
| D. | water treatment |
| Answer» D. water treatment | |
| 108. |
Main application of centrifugal pump is in which of the following? |
| A. | low viscosity products |
| B. | heavily aerated liquids |
| C. | gentle treatment with high viscosity |
| D. | water treatment |
| Answer» B. heavily aerated liquids | |
| 109. |
Most widely used sanitary pumps in the dairy industry are? |
| A. | centrifugal pump |
| B. | liquid ring pump |
| C. | positive displacement pump |
| D. | suction pump |
| Answer» B. liquid ring pump | |
| 110. |
The process of filling the liquid into the suction pipe and pump casing up to the level of delivery valve is called as |
| A. | filling |
| B. | pumping |
| C. | priming |
| D. | leveling |
| Answer» D. leveling | |
| 111. |
pump is also called as |
| A. | reciprocating pump |
| B. | rotary displacement pump |
| C. | centrifugal pump |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 112. |
has higher specific speed than the others? |
| A. | axial flow |
| B. | radial flow |
| C. | mixed flow |
| D. | all centrifugal pumps have same specific speed |
| Answer» B. radial flow | |
| 113. |
Operation of reciprocating motion is done |
| A. | froth pump |
| B. | single acting |
| C. | double acting |
| D. | bicycle pump |
| Answer» D. bicycle pump | |
| 114. |
Which pump is more suitable for an application where very high pressure is required to be developed at moderate discharge? |
| A. | reciprocating pump |
| B. | centrifugal pump |
| C. | turbine |
| D. | none of the mentioned |
| Answer» B. centrifugal pump | |
| 115. |
Bicycle pump generates more compression than volume displacement. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 116. |
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» C. double acting | |
| 117. |
Internal cavitation in reciprocating pumps occurs due to |
| A. | drag force |
| B. | cyclic stress |
| C. | shock waves |
| D. | flow speed |
| Answer» D. flow speed | |
| 118. |
Simple hand operating pump is also called as |
| A. | froth pump |
| B. | bicycle pump |
| C. | multistage pumps |
| D. | centrifugal pumps |
| Answer» C. multistage pumps | |
| 119. |
Reciprocating pumps are classified according to |
| A. | drag force |
| B. | number of cylinders |
| C. | shock waves |
| D. | flow speed |
| Answer» C. shock waves | |
| 120. |
Reciprocating pumps are also called as |
| A. | force pumps |
| B. | mass pumps |
| C. | heat pumps |
| D. | speed pumps |
| Answer» B. mass pumps | |
| 121. |
The higher discharge valve line holds the discharge valve |
| A. | open |
| B. | closed |
| C. | stop functioning |
| D. | automatic |
| Answer» C. stop functioning | |
| 122. |
The cylinder of reciprocating cylinder is made up of |
| A. | cast iron |
| B. | wrought iron |
| C. | aluminium |
| D. | copper |
| Answer» B. wrought iron | |
| 123. |
 into the chamber |
| A. | liquid |
| B. | pressure |
| C. | heat |
| D. | electricity |
| Answer» B. pressure | |
| 124. |
What happens to the reciprocating pump when left untouched? |
| A. | efficiency decreases |
| B. | wear and tear |
| C. | surface expansion |
| D. | pressure change |
| Answer» D. pressure change | |
| 125. |
Reciprocating pump is a |
| A. | negative displacement pump |
| B. | positive displacement pump |
| C. | diaphragm pump |
| D. | emulsion pump |
| Answer» C. diaphragm pump | |
| 126. |
The fluid coming into the centrifugal pump is accelerated by |
| A. | throttle |
| B. | impeller |
| C. | nozzle |
| D. | governor |
| Answer» C. nozzle | |
| 127. |
The rotational kinetic energy comes from |
| A. | engine motor |
| B. | pump |
| C. | tank |
| D. | draft tube |
| Answer» B. pump | |
| 128. |
With the increase in load, Energy in the turbine |
| A. | decreases |
| B. | increases |
| C. | remains same |
| D. | independent |
| Answer» B. increases | |
| 129. |
When the balancing of the turbine is disturbed, we use |
| A. | throttle governing |
| B. | steam governing |
| C. | nozzle governing |
| D. | emergency governing |
| Answer» E. | |
| 130. |
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» B. hydrodynamic energy to kinetic energy | |
| 131. |
Centrifugal pump is a turbomachinery. |
| A. | pressure |
| B. | speed |
| C. | power |
| D. | fluid |
| Answer» E. | |
| 132. |
Turbines and compressors work with the gas, while centrifugal pump transfers energy. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 133. |
Centrifugal pumps are a sub class of dynamic axisymmetric work absorbing turbomachinery. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 134. |
controlled by |
| A. | head race |
| B. | gate |
| C. | tail race |
| D. | pump |
| Answer» C. tail race | |
| 135. |
Centrifugal pumps transfer energy from |
| A. | rotor to fluid |
| B. | fluid to rotor |
| C. | draft to rotor |
| D. | rotor to draft |
| Answer» B. fluid to rotor | |
| 136. |
The main function of centrifugal pumps are to |
| A. | transfer speed |
| B. | transfer pressure |
| C. | transfer temperature |
| D. | transfer energy |
| Answer» E. | |
| 137. |
The main function of nozzle is to |
| A. | varying temperatures |
| B. | pressure variations |
| C. | load variations |
| D. | heat variations |
| Answer» C. load variations | |
| 138. |
Turbomachines work under |
| A. | newtons first law |
| B. | newtons second law |
| C. | newtons third law |
| D. | kepler’s law |
| Answer» C. newtons third law | |
| 139. |
Centrifugal pump is a |
| A. | turbomachinery |
| B. | flow regulating device |
| C. | drafting device |
| D. | intercooling device |
| Answer» B. flow regulating device | |
| 140. |
What is unit of standard acceleration? |
| A. | kg/m |
| B. | kg/s |
| C. | kg/m3 |
| D. | n/m |
| Answer» D. n/m | |
| 141. |
With the increase in the input power, efficiency |
| A. | increases |
| B. | decreases |
| C. | same |
| D. | independent |
| Answer» C. same | |
| 142. |
What does PSP stand for? |
| A. | pump start procedure |
| B. | positive start pump |
| C. | pump start pointer |
| D. | positive start pointer |
| Answer» B. positive start pump | |
| 143. |
Due to its impeller action, centrifugal pumps can cover a wide range of fluid pump applications. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 144. |
Different velocities in a centrifugal pump are determined by using |
| A. | velocity triangle |
| B. | reynolds number |
| C. | froude number |
| D. | overall efficiency |
| Answer» B. reynolds number | |
| 145. |
d) Radially head pressure |
| A. | pressure |
| B. | speed |
| C. | power |
| D. | fluid |
| Answer» E. | |
| 146. |
pump? |
| A. | cost |
| B. | simple in construction |
| C. | efficiency |
| D. | pump parameters |
| Answer» C. efficiency | |
| 147. |
in centrifugal pumps. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 148. |
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» B. conservation of mass | |
| 149. |
while passing |
| A. | pressure energy |
| B. | kinetic energy |
| C. | momentum |
| D. | potential energy |
| Answer» B. kinetic energy | |
| 150. |
decelerates the flow, what increases? |
| A. | pressure |
| B. | temperature |
| C. | volume |
| D. | flow rate |
| Answer» B. temperature | |