MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Hydraulic Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In case of centrifugal turbines with high specific speed, the efficiency curve is |
| A. | Pointed |
| B. | Small |
| C. | Steep |
| D. | Flat |
| Answer» B. Small | |
| 2. |
In case of centrifugal turbines with low specific speed, the efficiency curve is _________ |
| A. | Pointed |
| B. | Small |
| C. | Steep |
| D. | Flat |
| Answer» E. | |
| 3. |
The primary selection tool is called as _______ |
| A. | Pump curve |
| B. | Speed curve |
| C. | Power curve |
| D. | Fluid curve |
| Answer» B. Speed curve | |
| 4. |
As the specific speed increases, the slope of HQ curve _______ |
| A. | Decreases |
| B. | Increases |
| C. | Independent |
| D. | Remains the same |
| Answer» D. Remains the same | |
| 5. |
AS_THE_SPECIFIC_SPEED_INCREASES,_THE_SLOPE_OF_HQ_CURVE________?$ |
| A. | Decreases |
| B. | Increases |
| C. | Independent |
| D. | Remains the same |
| Answer» D. Remains the same | |
| 6. |
In case of centrifugal turbines with low specific speed, the efficiency curve is _________$ |
| A. | Pointed |
| B. | Small |
| C. | Steep |
| D. | Flat |
| Answer» E. | |
| 7. |
The_primary_selection_tool_is_called_as________$ |
| A. | Pump curve |
| B. | Speed curve |
| C. | Power curve |
| D. | Fluid curve |
| Answer» B. Speed curve | |
| 8. |
What is unit of standard acceleration? |
| A. | kg/m |
| B. | kg/s |
| C. | kg/m<sup>3</sup> |
| D. | N/m |
| Answer» D. N/m | |
| 9. |
With the increase in the input power, efficiency _______ |
| A. | Increases |
| B. | Decreases |
| C. | Same |
| D. | Independent |
| Answer» C. Same | |
| 10. |
In_case_of_centrifugal_turbines_with_high_specific_speed,_the_efficiency_curve_is |
| A. | Pointed |
| B. | Small |
| C. | Steep |
| D. | Flat |
| Answer» B. Small | |
| 11. |
The inlet passage of water entry is controlled by _______? |
| A. | Head race |
| B. | Gate |
| C. | Tail race |
| D. | Pump |
| Answer» C. Tail race | |
| 12. |
The normal operating range of centrifugal pump is sufficient to plot the characteristic curve. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following is taken into account during a characteristic curve? |
| A. | Flow rate |
| B. | Cavitation |
| C. | Tolerances |
| D. | Casing |
| Answer» B. Cavitation | |
| 14. |
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 | |
| 15. |
Which among the following is not a characteristic curve for centrifugal pump? |
| A. | Transfer speed vs Transfer pressure |
| B. | Head vs Flow rate |
| C. | Power input vs pump efficiency |
| D. | Specific speed vs pump efficiency |
| Answer» B. Head vs Flow rate | |
| 16. |
When the casing in a centrifugal pump decelerates the flow, what increases? |
| A. | Pressure |
| B. | Temperature |
| C. | Volume |
| D. | Flow rate |
| Answer» B. Temperature | |
| 17. |
What is the shape of the diffuser in the centrifugal pump? |
| A. | Round |
| B. | Dough nut |
| C. | Rectangle |
| D. | Cylindrical |
| Answer» C. Rectangle | |
| 18. |
The characteristic curves of a centrifugal pump, plots ______ required by the pump. |
| A. | Velocity |
| B. | Pressure |
| C. | NPSH |
| D. | Velocity and pressure |
| Answer» D. Velocity and pressure | |