Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.In multistage compressor, the isothermal compression is achieved by |
| employing intercooler |
| by constantly cooling the cylinder |
| by running compressor at very slow speed |
| by insulating the cylinder |
| none of the above. |
7.Which is false statement about air receivers |
| These are used to dampen pulsations , |
| These act as reservoir to- take care of sudden demands |
| These increase compressor efficiency |
| These knock out some oil and moisture |
| These reduce frequent on/off operation of compressors. |
8.A compressor at high altitude will draw |
| more power |
| less power |
| same power |
| more/less power depending on other factors |
| none of the above. |
9.Volumetric efficiency of air compressors is of the order of |
| 20-30% |
| 40-50% |
| 60-70% |
| 70-90% |
| 90-100%. |
10.The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is |
| less |
| more |
| same |
| more/less depending on compressor capacity |
| unpredictable. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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