MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
WHICH_MATERIAL_IS_USED_FOR_THE_MANUFACTURE_OF_THE_TURBINE_BLADES??$ |
| A. | Stainless steel |
| B. | Carbon steel |
| C. | High nickel alloy |
| D. | High alloy steel |
| Answer» D. High alloy steel | |
| 2. |
What is meant by inter cooling? |
| A. | Removal of heat from compressed air between stages of compression |
| B. | Transfer of heat energy from exhaust gases to the compressed air flowing between compressor and the combustion chamber |
| C. | To increase the temperature of partially expanded gases by burning more fuel |
| D. | None of the mentioned |
| Answer» B. Transfer of heat energy from exhaust gases to the compressed air flowing between compressor and the combustion chamber | |
| 3. |
What is regeneration? |
| A. | Removal of heat from compressed air between stages of compression |
| B. | Transfer of heat energy from exhaust gases to the compressed air flowing between compressor and the combustion chamber |
| C. | To increase the temperature of partially expanded gases by burning more fuel |
| D. | Both (b) & (c) |
| Answer» C. To increase the temperature of partially expanded gases by burning more fuel | |
| 4. |
To improve the efficiency of the gas turbines, which among these are used? |
| A. | Regenerator |
| B. | Inter cooling |
| C. | Reheating |
| D. | All of the mentioned |
| Answer» E. | |
| 5. |
The efficiency of the open cycle gas plant is quite low. Why? |
| A. | Gas gets cooled before reaching the turbine wheels |
| B. | A lot of mechanical energy is used up by the compressor |
| C. | Due to the presence of regenerator and absence of air pre heater |
| D. | Both (a) and (b) |
| Answer» E. | |
| 6. |
What would be the temperature of the gas in the combustion chamber? |
| A. | 500 °C |
| B. | 1600 °C |
| C. | 1200 °C |
| D. | 650 °C |
| Answer» C. 1200 ¬¨¬®‚Äö√†√ªC | |
| 7. |
Which of these is a working fluid in the topping plant of a Brayton-Rankine combined plant? |
| A. | Hydrogen |
| B. | Helium |
| C. | Nitrogen |
| D. | All of the mentioned |
| Answer» C. Nitrogen | |
| 8. |
If p and q are the efficiencies of a Brayton & Rankine cycles respectively in a Brayton-Rankine combined plant, the efficiency n of a combined plant is? |
| A. | n = p/q |
| B. | n = p+q-pq |
| C. | n = pq |
| D. | n = (1 – pq) |
| Answer» C. n = pq | |