Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part3 : 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 thermodynamic efficiency of rotary compressor is based on |
| isothermal compression |
| adiabatic compression |
| isentropic compression |
| polytropic compression |
| none of the above. |
22.Which is false statement about advantages of multistage compressor in comparison to single stage compressor |
| less power requirement |
| better mechanical balance |
| less loss of air due to leakage past the cylinder |
| more effective lubrication |
| lower volumetric efficiency. |
23.The advantage of multistage compression over single stage compression is |
| lower power consumption per unit of air delivered |
| higher volumetric efficiency |
| decreased discharge temperature |
| moisture free air |
| all of the above. |
24.A centrifugal compressor works on the principle of |
| conversion of pressure energy into kinetic energy |
| conversion of kinetic energy into pres�sure energy |
| centripetal action |
| generating pressure directly |
| combination of (a) and (d). |
More Compressors QUESTIONS AND ANSWERS available in next pages
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