railway RRB JE (CBT I + CBT II) Mock Test 2024 Refrigeration and Air Conditioning Refrigeration Cycles and Devices Heat Engine, Heat Pump and Refrigerator
If the COP of Carnot refrigerator is 4, then the thermal efficiency of the Carnot engine would be ________.
1
0.33
2
0.25
3
0.2
4
0.18