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Mechanical Engineering · Q61

Refrigeration And Air Conditioning

Engineering and GATE · Mechanical Engineering · question 61

Q61

When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by

A.
Operating the machine at higher speeds
B.
Operating the machine at lower speeds
C.
Raising the higher temperature
D.
Lowering the higher temperature
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Lowering the higher temperature
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