COMPRESSOR AND MOTORS - Practice Mode

1) Which type of rotor is used in 3 Phase induction motor?

Squirrel cage rotor Shaded pole rotor Laminated rotor Solid rotor

Correct Answer: Squirrel cage rotor

2) What is the temperature set in thermostat that stops the compressor motor?

Cut in Range Cut out Differential

Correct Answer: Cut out

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

Servo 20 POE SAE - 40 Mineral oil

Correct Answer: POE

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

Service valve Liquid line valve Discharge valve Suction valve

Correct Answer: Suction valve

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

Air Oxygen Nitrogen Refrigerant

Correct Answer: Nitrogen

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