GATE ME 1993 | Second Law of Thermodynamics Question 29 | Thermodynamics

GATE ME 1993

MCQ (Single Correct Answer)

-0.3

A reversible heat transfer demands:

The temperature difference causing heat transfer tends to zero

The system receiving heat must be at a constant temperature.

The system transferring out heat must be at a constant temperature.

Both interacting systems must be at constant temperatures

GATE ME 1992

MCQ (Single Correct Answer)

-0.3

A condenser of a refrigeration system rejects heat at a rate of $$120$$ $$kW,$$ while its compressor consumes a power of $$30$$ $$kW.$$ The coefficient of performance of the system would be

$$1/4$$

$$4$$

$$1/3$$

$$3$$

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