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. |
Specific speed less than 500 are called _________ |
| A. | Positive displacement pumps |
| B. | Negative displacement pumps |
| C. | Draft tubes |
| D. | Tanks |
| Answer» B. Negative displacement pumps | |
| 2. |
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» E. | |
| 3. |
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» D. 230 to 500 | |
| 4. |
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» C. 51 to 225 | |
| 5. |
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» D. 230 to 500 | |
| 6. |
Specific speed less than 500 are called _________$ |
| A. | Positive displacement pumps |
| B. | Negative displacement pumps |
| C. | Draft tubes |
| D. | Tanks |
| Answer» B. Negative displacement pumps | |
| 7. |
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» E. | |
| 8. |
Once we know the desired functions of the specific speed, it is easier to calculate its components units. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Specific speed is used to predict desired pump or turbine performance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
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» E. | |
| 11. |
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» C. 51 to 225 | |
| 12. |
Specific speed is an index used to predict _______ |
| A. | Head race distance |
| B. | Tail race distance |
| C. | Tank dimensions |
| D. | Turbine performance |
| Answer» E. | |
| 13. |
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» B. 30 to 51 | |
| 14. |
Hydraulic head is also called as _________ |
| A. | Pressure head |
| B. | Density head |
| C. | Kinetic head |
| D. | Piezometric head |
| Answer» E. | |
| 15. |
Impeller in a motor is used to _________ |
| A. | Change temperatures |
| B. | Change Pressure |
| C. | Kinetic energy change |
| D. | Change density |
| Answer» C. Kinetic energy change | |
| 16. |
Specific speed develops a unit power under a unit _______ |
| A. | Temperature |
| B. | Pressure |
| C. | Volume of the flow |
| D. | Head |
| Answer» E. | |
| 17. |
Specific speeds are used in pumps to determine ________ |
| A. | Temperature |
| B. | Reaction speed |
| C. | Suction specific speed |
| D. | Wheel speed |
| Answer» D. Wheel speed | |
| 18. |
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» D. Speed of rotor | |