McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
Chapters
| 151. |
In centrifugal pumps, their capacity is affected due to |
| A. | Drag force |
| B. | Cyclic stress |
| C. | Shock waves |
| D. | Pressure View Answer |
| Answer» D. Pressure View Answer | |
| 152. |
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 View Answer |
| Answer» A. Slip | |
| 153. |
Positive displacement pumps regulate the flow by varying its |
| A. | Drag force |
| B. | Cyclic stress |
| C. | Shock waves |
| D. | Flow speed View Answer |
| Answer» D. Flow speed View Answer | |
| 154. |
Simplest example of single acting reciprocating pump is |
| A. | Mineral ores |
| B. | Whirl wheels |
| C. | Bicycle tires |
| D. | Syringe View Answer |
| Answer» D. Syringe View Answer | |
| 155. |
Rotary pumps do not function well under |
| A. | High Vaporisation |
| B. | High Sedimentation |
| C. | High viscosity |
| D. | Excavation View Answer |
| Answer» C. High viscosity | |
| 156. |
The parameter that disturbs the working of the rotary pump is_ |
| A. | High Vaporisation |
| B. | High Sedimentation |
| C. | Low flow rate |
| D. | Excavation View Answer |
| Answer» C. Low flow rate | |
| 157. |
Rotary pumps are commonly used to circulate_ |
| A. | Lube oils |
| B. | Petroleum |
| C. | Diesel |
| D. | Water View Answer |
| Answer» A. Lube oils | |
| 158. |
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 View Answer |
| Answer» A. Total liquid displaced | |
| 159. |
What type of flow does the reciprocating pump have? |
| A. | Uniform |
| B. | Continuous |
| C. | Pulsating |
| D. | Non-uniform View Answer |
| Answer» B. Continuous | |
| 160. |
What is the full form of PD? |
| A. | Positive displacement |
| B. | Pump displacement |
| C. | Plunger displacement |
| D. | Plunger direct View Answer |
| Answer» A. Positive displacement | |
| 161. |
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 View Answer |
| Answer» B. Because it contains abrasive particles | |
| 162. |
The maximum speed of reciprocating pump is |
| A. | 20m/min |
| B. | 30m/min |
| C. | 40m/min |
| D. | 50m/min View Answer |
| Answer» B. 30m/min | |
| 163. |
The pump that uses a relatively smaller amount of liquid is called |
| A. | Froth pump |
| B. | Reciprocating pump |
| C. | Double acting |
| D. | Bicycle pump View Answer |
| Answer» B. Reciprocating pump | |
| 164. |
Sliding vanes in pumps are held by |
| A. | Draft pins |
| B. | Whirl wheels |
| C. | Springs |
| D. | Nails View Answer |
| Answer» C. Springs | |
| 165. |
Air vessel accumulates excess quantity of |
| A. | Vapor |
| B. | Water |
| C. | Heat |
| D. | Pressure View Answer |
| Answer» B. Water | |
| 166. |
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 View Answer |
| Answer» C. Double acting | |
| 167. |
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 View Answer |
| Answer» A. Double acting | |
| 168. |
Turbomachines work under |
| A. | Newtons first law |
| B. | Newtons second law |
| C. | Newtons third law |
| D. | Kepler’s law View Answer |
| Answer» B. Newtons second law | |
| 169. |
The main function of nozzle is to |
| A. | Varying temperatures |
| B. | Pressure variations |
| C. | Load variations |
| D. | Heat variations View Answer |
| Answer» B. Pressure variations | |
| 170. |
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 View Answer |
| Answer» A. Into the cylinder | |
| 171. |
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 View Answer |
| Answer» C. Volume delivered remains the same | |
| 172. |
The amount of fluid that leaks internally is called |
| A. | Head race |
| B. | Slip |
| C. | Tail race |
| D. | Internal friction View Answer |
| Answer» B. Slip | |
| 173. |
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 View Answer |
| Answer» A. Below 1 percent | |
| 174. |
If the slip is above 5 percent, the pumps needs to be |
| A. | Dragged |
| B. | Overhauled |
| C. | Retracted |
| D. | Intermittent View Answer |
| Answer» B. Overhauled | |
| 175. |
Slip in a pump depends on which of following parameters? |
| A. | Wear |
| B. | Pressure |
| C. | Temperature |
| D. | Heat View Answer |
| Answer» A. Wear | |
| 176. |
Internal breakage in a pump mainly takes place when |
| A. | Discharge pressure is increased |
| B. | Temperature is increased |
| C. | Heat leads to expansion |
| D. | Corrosion takes place View Answer |
| Answer» A. Discharge pressure is increased | |
| 177. |
The output that we get after an internal breakage can be classed as |
| A. | An increase |
| B. | A decrease |
| C. | Constant |
| D. | An independent variable View Answer |
| Answer» C. Constant | |
| 178. |
When the hydraulic fluid forms on only one side of the piston, it is called |
| A. | Single acting pump |
| B. | Double acting pump |
| C. | Froth pump |
| D. | Draft tube View Answer |
| Answer» A. Single acting pump | |
| 179. |
A pump with two steams and two water cylinders is called |
| A. | Single acting pump |
| B. | Double acting pump |
| C. | Froth pump |
| D. | Duplex pump View Answer |
| Answer» D. Duplex pump View Answer | |
| 180. |
When an external force is not available in a pump, we use a |
| A. | Hydraulic cylinder |
| B. | Slip gauge |
| C. | Tail race |
| D. | Heater View Answer |
| Answer» A. Hydraulic cylinder | |
| 181. |
Reciprocating pumps give a flow |
| A. | Uniform |
| B. | Non- uniform |
| C. | Pulsating |
| D. | Sinusoidal View Answer |
| Answer» C. Pulsating | |
| 182. |
Suction stroke becomes difficult to pump |
| A. | High temperature fluids |
| B. | Viscous fluids |
| C. | Fluids with abrasives |
| D. | High velocity fluids View Answer |
| Answer» B. Viscous fluids | |
| 183. |
Piston pumps are very |
| A. | Expensive |
| B. | Cheap |
| C. | Reasonable |
| D. | Intricate View Answer |
| Answer» A. Expensive | |
| 184. |
What is the full form of DAC? |
| A. | Digital Acting pumps |
| B. | Double acting pumps |
| C. | Data acting pumps |
| D. | Draft tube pumps View Answer |
| Answer» B. Double acting pumps | |
| 185. |
Which among the following is not a multi-cylinder pump? |
| A. | Double acting simplex |
| B. | Single acting duplex |
| C. | Double acting duplex |
| D. | Single acting triplex View Answer |
| Answer» A. Double acting simplex | |
| 186. |
A pressure vessel is used to hold |
| A. | Air |
| B. | Gases |
| C. | Molecules |
| D. | Solids View Answer |
| Answer» B. Gases | |
| 187. |
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 View Answer |
| Answer» B. Expansion vessel | |
| 188. |
How is the construction of the vessel tested? |
| A. | Uniform testing |
| B. | Continuous testing |
| C. | Pulsating test |
| D. | Non-destructive testing View Answer |
| Answer» D. Non-destructive testing View Answer | |
| 189. |
Where is the excess quantity of water from the pump accumulated? |
| A. | Froth tube |
| B. | Draft tube |
| C. | Air vessels |
| D. | Bicycle pump View Answer |
| Answer» C. Air vessels | |
| 190. |
What is the shape of a pressure vessel? |
| A. | Square |
| B. | Spheres |
| C. | Cones |
| D. | All the shapes View Answer |
| Answer» D. All the shapes View Answer | |
| 191. |
Pressure vessel closures are used to |
| A. | Avoid breakage |
| B. | Avoid leakage |
| C. | Retain structures |
| D. | Maintain pressure View Answer |
| Answer» C. Retain structures | |
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