Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part5 : 16 to 20
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches |
| isothermal |
| isentropic |
| adiabatic |
| isochoric |
| isobaric. |
17.It is not possible to use closed gas turbine cycle in aeronautical engines because |
| it is inefficient |
| it is bulky |
| it requires cooling water for its operation |
| c |
| opt 5 |
18.Pick up the correct statement |
| gas turbine uses low air-fuel ratio to economies on fuel |
| gas turbine uses high air-fuel ratio to reduce outgoing temperature |
| gas turbine uses low air-fuel ratio to develop the high thrust required |
| all of the above |
| none of the above. |
19.Producer gas is produced by |
| carbonation of coal |
| passing steam over incandescent coke |
| passing air and a large amount of steam over waste coal at about 65�C |
| partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast |
| same way as the natural gas. |
20.In the axial flow gas turbine, the work ratio is the ratio of |
| compressor work and turbine work |
| output and input |
| actual total head temperature drop to the entropic total head drop from total head inlet to static head outlet |
| actual compressor work and theoretical compressor work |
| none of the above. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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