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MRAC
MRAC Set-1
Refrigeration Direct Cool
23

Refrigeration Direct Cool MCQ with Answers

23) Which gas is used for pressurising and testing leakage of RAC system?

O₂

N₂

O₃

SO₂

Answer is:

N₂

Refrigeration Direct Cool MCQ with Answers

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Related Refrigeration Direct Cool MCQ with Answers

24) Which process absorbs heat from the cabinet in refrigerator?

Expansion

Compression

Evaporation

Condensation

Answer is:

Evaporation

25) What is ensured before removing a leaky evaporator in a refrigerator?

Recharge refrigerant to the system

Check the drain tray of evaporator

Removal of the thermostat sensor

Pressurize the system with refrigerant

Answer is:

Removal of the thermostat sensor

26) What is the fault in compressor motor if there is electrical continuity between the dome and motor terminal?

Shorted run winding

Open common terminal

Shorted start winding

Grounded compressor motor

Answer is:

Grounded compressor motor

27) How does the evaporator frost affect the sub zero temperature thermally in refrigerator?

As conductor

As insulator

As convector

As radiator

Answer is:

As insulator

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