SSC SSC JE Mechanical 2025 Mock Test Series (Paper 1 & Paper 2) Refrigeration and Air Conditioning Refrigeration Cycles and Devices
Which of the following is NOT a function of lubricating oils used in refrigerants?
1
Decreasing the coolant temperature and hence increasing COP
2
Transferring heat from the crank-case to the compressor
3
Minimising friction
4
Sealing the gas between the suction and discharge ports