Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part1 : 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 work done per unit mass of air in compression will'be least when n is equal to |
| 1 |
| 1.2 , |
| 1.3 |
| 1.4 |
| 1.5 |
12.Adiabatic compression is one in which |
| temperature during compression remains constant |
| no heat leaves or enters the compressor cylinder during compression |
| temperature rise follows a linear relationship |
| work done is maximum |
| entropy decreases. |
13.Cylinder clearance in a compressor should be |
| as large as possible |
| as small as possible |
| about 50% of swept volume |
| about 100% of swept volume |
| none of the above. |
14.The ratio of work done per cycle to the swept volume in case of compressor is called |
| compression index |
| compression ratio |
| compressor efficiency |
| mean effective pressure |
| compressor effectiveness. |
15.Inter cooling in compressors |
| cools the delivered air |
| results in saving of power in compressing a given volume to given pressure |
| is the standard practice for big compressors |
| enables compression in two stages |
| prevents compressor jacket running very hot. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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