MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
The ratio of volume available at shaft of turbine and power supplied at the inlet of the turbine |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» E. | |
| 2. |
To obtain maximum hydraulic efficiency of pelton turbine, blade velocity should be ___________ Times the inlet velocity of jet. |
| A. | Half |
| B. | One quarter |
| C. | Twice |
| D. | Thrice |
| Answer» B. One quarter | |
| 3. |
In the expression for overall efficiency of turbine, which is p/(k*g*q*h), where “k” is known as ___________ |
| A. | Density of liquid |
| B. | Specific density of liquid |
| C. | Volume of liquid |
| D. | Specific gravity of liquid |
| Answer» B. Specific density of liquid | |
| 4. |
_____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine. |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» C. Hydraulic efficiency | |
| 5. |
TO_OBTAIN_MAXIMUM_HYDRAULIC_EFFICIENCY_OF_PELTON_TURBINE,_BLADE_VELOCITY_SHOULD_BE_____________TIMES_THE_INLET_VELOCITY_OF_JET.?$ |
| A. | Half |
| B. | One quarter |
| C. | Twice |
| D. | Thrice |
| Answer» B. One quarter | |
| 6. |
The ratio of volume available at shaft of turbine and power supplied at the inlet of the turbine$ |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» E. | |
| 7. |
Among_the_following_which_turbine_has_least_efficiency?$ |
| A. | Pelton turbine |
| B. | Kaplan turbine |
| C. | Francis turbine |
| D. | Propeller turbine |
| Answer» B. Kaplan turbine | |
| 8. |
The expression for maximum hydraulic efficiency of pelton turbine is given by? |
| A. | (1+cos k)/2 where k is outlet blade angle |
| B. | (2+cos k)/2 where k is outlet blade angle |
| C. | (3+cos k)/2 where k is outlet blade angle |
| D. | (4+cos k)/2 where k is outlet blade angle |
| Answer» B. (2+cos k)/2 where k is outlet blade angle | |
| 9. |
In the expression for overall efficiency of turbine, which is p/(k*g*q*h), where “k” is known as$ |
| A. | Density of liquid |
| B. | Specific density of liquid |
| C. | Volume of liquid |
| D. | Specific gravity of liquid |
| Answer» B. Specific density of liquid | |
| 10. |
_____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine? |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» C. Hydraulic efficiency | |
| 11. |
Among the following which turbine has highest efficiency? |
| A. | Kaplan turbine |
| B. | Francis turbine |
| C. | Pelton turbine |
| D. | Propeller turbine |
| Answer» B. Francis turbine | |
| 12. |
The product of mechanical efficiency and hydraulic efficiency is known as? |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» E. | |
| 13. |
The ratio of power at the shaft of turbine and power delivered by water to runner is known as? |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» B. Volumetric efficiency | |
| 14. |
Which among the following which is not an efficiency of turbine? |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Electrical efficiency |
| Answer» E. | |
| 15. |
_____________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine. |
| A. | Mechanical efficiency |
| B. | Volumetric efficiency |
| C. | Hydraulic efficiency |
| D. | Overall efficiency |
| Answer» D. Overall efficiency | |