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MRAC Set-1
Compressor and Motors
13

Compressor and Motors MCQ with Answers

13) Which lubricant oil is used in swash plate of R 134a compressor?

Servo 20

POE

SAE - 40

Mineral oil

Answer is:

POE

Compressor and Motors MCQ with Answers

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Related Compressor and Motors MCQ with Answers

14) Which valve is closed during compression stroke in reciprocating compressor?

Service valve

Liquid line valve

Discharge valve

Suction valve

Answer is:

Suction valve

15) Which gas is used for pressure testing the compressor dome?

Air

Oxygen

Nitrogen

Refrigerant

Answer is:

Nitrogen

16) Which cooling medium is used to cool the motor of a hermetic reciprocating compressor in AC?

Discharge vapour

Liquid refrigerant

Suction vapour

Water

Answer is:

Suction vapour

17) What is the method of starting a 3 phase slip ring induction motor?

With starting relay

Using starting capacitor

With running capacitor

Adding resistance to rotor winding

Answer is:

Adding resistance to rotor winding

Compressor and Motors MCQ with Answers

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