SSC JE Mechanical Engineering 2017 Set 2 Paper

Question : 194 of 200

Marks: +1, -0

The coefficient of performance is the ratio of the refrigerant effect to the_____________.
A. Heat of compression
B. Work done by compressor
C. Enthalpy increase in compressor

Only A
Only B
Only C
A, B and C

Validate

Solution:

The equation is

COP=Q/W

where
● Q is the useful heat supplied or removed by the considered system.
● W is the work required by the considered system.
Work input the system include heat of compression, work done by compression and enthalpy increase in compression.

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