Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part4 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.The work ratio of simple gas turbine cycle depends on |
| pressure ratio |
| maximum cycle temperature |
| minimum cycle temperature |
| all of the above |
| none of die above. |
22.Pick up the wrong statement |
| centrifugal compressors deliver prac-tically constant pressure over a con-> siderable range of capacities |
| Axial flow compressors have a sub-stantially constant delivery at variable pressures |
| centrifugal compressors have a wider stable operating range than axial flow compressors |
| axial flow compressors are bigger in diameter compared to centrifugal type |
| axial flow compressors apt to be longer as compared to centrifugal type. |
23.Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on |
| mass flow rate |
| pressure ratio |
| change in load |
| stagnation pressure at the outlet |
| all of the above. |
24.The air-fuel ratio in gas turbines is of the order of |
| 7 : 1 |
| 15 : 1 |
| 30 : 1 |
| 40 : 1 |
| 50: 1. |
25.The ratio of specific weigh/h.p. of gas turbine and I.C engines may be typically of the order of |
| 1 : 1 |
| 2 : 1 |
| 4 : 1 |
| 1:2 |
| 1 : 6. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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