A. 0.75
B. 1
C. 1.27
D. 1.35
E. 2
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
E. none of the above
In order that a cycle be reversible, following must be satisfied ________________? Read More »
Thermodynamics A. throttling
B. free expansion
C. constant volume and constant pressure
D. hyperbolic and pV = C
E. isothermal and adiabatic
Which of the following processes are thermodynamically reversible___________________? Read More »
Thermodynamics A. temperature
B. pressure
C. both pressure and temperature
D. variation of its constituents
E. air flow
The specific heat of air increases with increase in __________________? Read More »
Thermodynamics A. work done is zero
B. heat transfer is zero
C. both A. and B. above
D. work done is zero but heat increases
E. work done is zero but heat decreases
In a free expansion process___________________? Read More »
Thermodynamics A. 29.27 J/kmol°K
B. 83.14J/kmol°K
C. 848J/kmol°K
D. All J/kmol °K
E. 735 J/kmol °K
A. 21
B. 23
C. 25
D. 77
E. 79
On volume basis, air contains following parts of oxygen _____________________? Read More »
Thermodynamics A. 100 xlOO5 joules
B. lxlO5 joules
C. 10 xlO5 joules
D. 10 xlO5 kilo joules
E. 10xl04kiojoules
A. constant volume
B. free expansion
C. throttling
D. all Of the above
E. none of the above
Work done is zero for the following process_________________? Read More »
Thermodynamics A. zeroth law of thermodynamics
B. first law of thermodynamics
C. second law of thermodynamics
D. third law of thermodynamics
E. Avogadro’s hypothesis
