Mechanical Engineering Questions And Answers :: Thermodynamics: part3



Mechanical Engineering : Thermodynamics QUESTIONS AND ANSWERS :: part3 : 21 to 25

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

21.In a non-flow reversible process for which p = (- 3V+ 15) x 105N/m2,V changes from 1 m to 2 m3. The work done will be about

100 xlOO5 joules
lxlO5 joules
10 xlO5 joules
10 xlO5 kilo joules
10xl04ki\ojoules.

22.Universal gas constant is defined as equal to product of the molecular weight of the gas and

specific heat at constant pressure
specific heat at constant volume
ratio of two specific heats
gas constant
unity.

23.In a free expansion process

work done is zero
heat transfer is zero
both (a) and (b) above
work done is zero but heat increases
work done is zero but heat decreases.

24.For which of the following substances, the gas laws can be used with minimum error

dry steam
wet steam
saturated steam
superheated steam
steam at atmospheric pressure.

More Thermodynamics QUESTIONS AND ANSWERS available in next pages

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