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Monday, December 9, 2013
#1 MECHANICAL ENGINEERING JOB INTERVIEW QUESTIONS
1.). What is factor of evaporation ?
Ans: It is the ratio of heat change from feed water to steam and the heat of vaporization of steam at atmospheric pressure.
2.)At what pressure and temperature the density of water and steam is same ?
Ans: At 225 kg/cm2 and 74.6° C.
3.)What is meant by quality of steam ?
Ans: It refers to amount of unevaporated moisture in steam. If steam is perfectly dry, it's quality is 100%.
4.)What do you understand by effectiveness of heat exchanger ?
Ans: Effectiveness of heat exchanger = actual heat transfer/maximum possible heat transfer.
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