
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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