Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part3 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.Pick up the wrong statement about advantages of multistage compression |
| better lubrication is possible advantages of multistage |
| more loss of air due to leakage past the cylinder |
| mechanical balance is better |
| air can be cooled perfectly in between |
| more uniform torque, light cylinder and saving in work. |
2.For a compressor, least work will be done if the compression is |
| is entropic |
| isothermal |
| poly tropic |
| somewhere in between is entropic and isothermal |
| none of the above. |
3.For slow-speed large capacity compressor, following type of valve will be best suited |
| poppet valve |
| mechanical valve of the corliss, sleeve, rotary or semirotary type |
| disc or feather type |
| any of the above |
| none of the above. |
4.More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than |
| 2 kg/cm2 |
| 6 kg/cm2 |
| 10 kg/cm2 |
| 14.7 kg/cm2 |
| none of the above. |
5.The ratio of isentropic work to Euler work is known as |
| pressure coefficient |
| work coefficient |
| polytropic reaction |
| slip factor |
| compressor efficiency. |
More Compressors QUESTIONS AND ANSWERS available in next pages
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