Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part3 : 11 to 15
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.The volumetric efficiency of a compressor is calculated on the basis of |
| volume of air inhaled at working conditions |
| volume of air inhaled at N.T.P. conditions |
| volume at 0�C and 1 kg/cm2 |
| volume at 20�C and 1 kg/cm2 |
| none of the above. |
12.Diffuser in a compressor is used to |
| increase velocity |
| make the flow stream-line |
| convert pressure energy into kinetic energy |
| convert kinetic energy into pressure energy |
| increase degree of reaction. |
13.The indicated work per unit mass of air delivered is |
| directly proportional to clearance volume |
| greatly affected by clearance volume |
| not affected by clearance volume |
| inversely proportional to clearance volume |
| opt 5 |
14.The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation |
| 0.1% |
| 0.5% |
| 1.0% |
| 5% |
| 10%. |
15.In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to |
| N.T.P. conditions |
| intake temperature and pressure conditions |
| 0�C and 1 kg/cm2 |
| 20�C and 1 kg/cm2 |
| none of the above. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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