Consider the following functions:1) Minimizing friction2) Sealing the – McqOptions

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1.	Consider the following functions:1) Minimizing friction2) Sealing the gas between suction and discharge ports3) As a coolant to transfer heat from the crankcase to the compressor shell4) To dampen the noise generated by moving partsWhich of the above function do lubricants in refrigeration systems perform?
A.	1, 2, 3, and 4
B.	1 and 2 only
C.	2 and 3 only
D.	3 and 4 only
Answer» B. 1 and 2 only

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