MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Operations knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate power, if Q is 4.50 m3/s and at a height of 2 m and consider water as fluid? |
| A. | 600 |
| B. | 900 |
| C. | 100 |
| D. | 500 |
| Answer» C. 100 | |
| 2. |
Calculate NFr, if impellor takes 15 rotations and 1.2 m in diameter? |
| A. | 7.88 |
| B. | 7.36 |
| C. | 8.38 |
| D. | 5.50 |
| Answer» D. 5.50 | |
| 3. |
Calculate NRe, if diameter is 12 m and impellor takes 20 rotations and density and viscosity are 1.20 and 200? |
| A. | 15.5 |
| B. | 17.28 |
| C. | 10.25 |
| D. | 8.52 |
| Answer» C. 10.25 | |
| 4. |
CALCULATE_NFR,_IF_IMPELLOR_TAKES_15_ROTATIONS_AND_1.2_M_IN_DIAMETER??$ |
| A. | 7.88 |
| B. | 7.36 |
| C. | 8.38 |
| D. | 5.50 |
| Answer» D. 5.50 | |
| 5. |
Calculate_power,_if_Q_is_4.50_m3/s_and_at_a_height_of_2_m_and_consider_water_as_fluid?$ |
| A. | 600 |
| B. | 900 |
| C. | 100 |
| D. | 500 |
| Answer» C. 100 | |
| 6. |
Calculate NRe , if diameter is 12 m and impellor takes 20 rotations and density and viscosity are 1.20 and 200? |
| A. | 15.50 |
| B. | 17.28 |
| C. | 10.25 |
| D. | 8.52 |
| Answer» C. 10.25 | |
| 7. |
________ is one where the change in head is brought about primarily by a change in velocity. |
| A. | Impulse turbine |
| B. | Reaction turbine |
| C. | Axial turbine |
| D. | Radial Turbine |
| Answer» B. Reaction turbine | |
| 8. |
In an axial turbine, the kinetic energy of combustion gas is converted to mechanical power by _________ |
| A. | Shear action |
| B. | Axial action |
| C. | Impulse action |
| D. | Tear action |
| Answer» D. Tear action | |
| 9. |
Due to density variation from inlet to exit, the flow area _____________ |
| A. | Reduces |
| B. | Increases |
| C. | Remains same |
| D. | Constant |
| Answer» B. Increases | |
| 10. |
An axial compressor is a relatively _________ pressure ratio turbomachine. |
| A. | High |
| B. | Low |
| C. | Medium |
| D. | Constant |
| Answer» C. Medium | |
| 11. |
The energy level of the fluid flowing through it is increased by the action of the __________ |
| A. | Rotor blades |
| B. | Axial blades |
| C. | Motor blades |
| D. | Initial blades |
| Answer» B. Axial blades | |
| 12. |
________ consists of a row of rotor blades followed by a row of stator blades. |
| A. | Centrifugal compressor |
| B. | Axial compressor |
| C. | Axial pump |
| D. | Radial pump |
| Answer» C. Axial pump | |
| 13. |
__________ is an exhaust gas driven compressor used to increase the power output. |
| A. | Turbocharger |
| B. | Sonic boom |
| C. | Compressor |
| D. | Rotor |
| Answer» B. Sonic boom | |