Mechanical Engineering MCQs

A. Zeroth law of thermodynamics
B. First law of thermodynamics
C. Second law of thermodynamics
D. Third law of thermodynamics

A. Constant volume
B. Free expansion
C. Throttling
D. All of the above

A. 100 xloo5 joules
B. Lxlo5 joules
C. 10 xlo5 joules
D. 10 xlo5 kilo joules

A. 21
B. 23
C. 25
D. 77

A. 29.27 j/kmol°k
B. 83.14j/kmol°k
C. 848j/kmol°k
D. All j/kmol °k

A. Work done is zero
B. Heat transfer is zero
C. Both a. and b. above
D. Work done is zero but heat increases

A. Temperature
B. Pressure
C. Both pressure and temperature
D. Variation of its constituents

A. throttling
B. free expansion
C. constant volume and constant pressure
D. hyperbolic and pv = c

A. Free expansion or friction resisted expansion/compression process should not be encountered
B. When heat is being absorbed, temperature of hot source and working sub¬stance should be same
C. When beat is being rejected, temperature of cold source and working sub-stance should be same
D. All of the above

A. 0.75
B. 1
C. 1.27
D. 1.35