"If the temperature of working substance must not differ appreciably from that of the surrounding of any stage of the cycle of the operations" is the condition of
Chemical equilibrium
Thermal equilibrium
mechanical equilibrium
none of these
As we learnt
Thermal Equilibrium -
There is a uniform temperature in all parts of the system and is same as that of surrounding.
- wherein
T is independent of time.
All part of the system and surrounding should remain at the same temperature
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