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ME Set-3
Engineering Thermodynamic
68

Engineering Thermodynamics MCQ with Answers

68) Work done is zero for the following process

constant volume

free expansion

throttling

all Of the above

Answer is:

all Of the above

Explanation:

Work done is zero for the following process
* constant volume
* free expansion
* throttling

Engineering Thermodynamics MCQ with Answers

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Related Engineering Thermodynamics MCQ with Answers

69) For which of the following substances, the gas laws can be used with minimum error

dry steam

wet steam

saturated steam

superheated steam

Answer is:

superheated steam

70) 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

Answer is:

10 xlO5 joules

71) The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is

29.27 kgfm/mol°K

8314kgfm/mol°K

848kgfm/mol°K

427kgfm/mol°K

Answer is:

848kgfm/mol°K

72) On volume basis, air contains following parts of oxygen

21

23

25

77

Answer is:

21

Engineering Thermodynamics MCQ with Answers

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