MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Thermal Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Intercooling and regeneration in combination used to increases _________ |
| A. | Net work output |
| B. | Efficiency |
| C. | Doesn t change net work output and efficiency |
| D. | Both net work output and efficiency |
| Answer» E. | |
| 2. |
Reheat and regeneration in combination used to increases ________ |
| A. | Net work output |
| B. | Efficiency |
| C. | Both net work output and efficiency |
| D. | Doesn t change net work output and efficiency |
| Answer» D. Doesn t change net work output and efficiency | |
| 3. |
In how many stages the compression process is divided in intercooling? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Five |
| Answer» C. Three | |
| 4. |
What is the effect of regeneration in brayton cycle work output? |
| A. | Work output increases |
| B. | Work output decreases |
| C. | Work output becomes zero |
| D. | Work output doesn t change |
| Answer» E. | |
| 5. |
If regeneration is also used along with reheating the efficiency will _____ |
| A. | Decreases |
| B. | Increases |
| C. | Zero |
| D. | Remain same |
| Answer» C. Zero | |
| 6. |
Reheating will _______ the efficiency of brayton cycle. |
| A. | Decreases |
| B. | Increases |
| C. | Zero |
| D. | Remain same |
| Answer» B. Increases | |
| 7. |
In brayton cycle regenerator is placed between __________ |
| A. | Turbine and heat exchanger |
| B. | Turbine and intercooler |
| C. | Compressor and intercooler |
| D. | Compressor and heat exchanger |
| Answer» E. | |
| 8. |
In a brayton cycle heat rejection takes place ____ |
| A. | At constant volume process |
| B. | At constant pressure process |
| C. | First at constant volume then at constant pressure process |
| D. | First at constant pressure then at constant volume process |
| Answer» C. First at constant volume then at constant pressure process | |
| 9. |
In a brayton cycle heat addition takes place __________ |
| A. | At constant volume process |
| B. | At constant pressure process |
| C. | First at constant volume then at constant pressure process |
| D. | First at constant pressure then at constant volume process |
| Answer» C. First at constant volume then at constant pressure process | |
| 10. |
Which of the following methods cannot be used to increase the efficiency of brayton cycle? |
| A. | Decreasing pressure ratio |
| B. | Increasing pressure ratio |
| C. | Regeneration |
| D. | Heat exchanger |
| Answer» B. Increasing pressure ratio | |
| 11. |
For same maximum pressure and heat input, most efficient cycle is _________ |
| A. | Dual cycle |
| B. | Rankine cycle |
| C. | Brayton cycle |
| D. | Diesel cycle |
| Answer» D. Diesel cycle | |
| 12. |
The compression ratio (r) of dual cycle is equal to _________ |
| A. | r = volume of the cylinder at the beginning of the compression/volume of the cylinder at the end of the compression |
| B. | r = volume of the cylinder at the end of the compression/ volume of the cylinder at the beginning of the compression |
| C. | r = clearance volume/ volume of the cylinder at the beginning of the compression |
| D. | r = volume of the cylinder at the end of the compression/clearance volume |
| Answer» B. r = volume of the cylinder at the end of the compression/ volume of the cylinder at the beginning of the compression | |
| 13. |
Gas turbine works on _____ |
| A. | Dual cycle |
| B. | Otto cycle |
| C. | Brayton cycle |
| D. | Diesel cycle |
| Answer» D. Diesel cycle | |