MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant Engg knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A_STERLING_ENGINE_USES_AN_ENERGY_SOURCE_WHOSE_TEMPERATURE_IS_727¬¨ àûC_AND_AN_ENERGY_SINK_WHOSE_TEMPERATURE_IS_27¬¨ àûC._HOW_MUCH_HEAT_MUST_BE_ADDED_TO_THE_ENGINE_TO_PRODUCE_1_UNIT_OF_WORK??$# |
| A. | 1.10 |
| B. | 1.19 |
| C. | 1.43 |
| D. | 2.0 |
| Answer» D. 2.0 | |
| 2. |
Which_of_the_following_is_not_a_component_of_Brayton_cycle?$ |
| A. | Compressor |
| B. | Combustion Chamber |
| C. | Turbine |
| D. | Pump |
| Answer» E. | |
| 3. |
The compression ratio is the ratio of? |
| A. | Swept volume to total volume |
| B. | Total volume to swept volume |
| C. | Total volume to clearance volume |
| D. | None of the mentioned |
| Answer» B. Total volume to swept volume | |
| 4. |
For the same maximum pressure and heat input, the most efficient cycle is? |
| A. | Brayton cycle |
| B. | Carnot cycle |
| C. | Rankine cycle |
| D. | Dual cycle |
| Answer» B. Carnot cycle | |
| 5. |
Which of the following methods can be used to increase efficiency of a Brayton cycle? |
| A. | Regeneration |
| B. | Increasing pressure ratio |
| C. | Heat exchanger |
| D. | All of the mentioned |
| Answer» E. | |
| 6. |
A simple Brayton cycle has a pressure ratio of 5 and a maximum temperature of 900 K. Air enters the compressor at 100 kPa, 300 K. Based upon cold-air standard analysis assumptions, the back-work ratio of this cycle is: |
| A. | 0.23 |
| B. | 0.53 |
| C. | 0.48 |
| D. | 0.36 |
| Answer» C. 0.48 | |
| 7. |
A simple Brayton cycle uses Helium as the working fluid, has a maximum temperature of 1000 K, and a pressure ratio of 4. At the start of the compression, the Helium pressure and temperature are 50 kPa and 250 K. Based upon cold-air standard analysis assumptions, the thermal efficiency of the cycle is: |
| A. | 0.13 |
| B. | 0.23 |
| C. | 0.43 |
| D. | 0.53 |
| Answer» E. | |
| 8. |
What is the maximum possible TIT(Turbine Inlet Temperature)? |
| A. | 1000 K |
| B. | 1500 K |
| C. | 950 K |
| D. | 1300 K |
| Answer» E. | |
| 9. |
What is the range of Thermal efficiency in Brayton cycle? |
| A. | 30-35% |
| B. | 40-45% |
| C. | 50-55% |
| D. | 50-60% |
| Answer» D. 50-60% | |
| 10. |
A gas turbine works on? |
| A. | Carnot cycle |
| B. | Brayton cycle |
| C. | Dual cycle |
| D. | Rankine cycle |
| Answer» C. Dual cycle | |