REFRIGERATION DIRECT COOL - Practice Mode

1) Which two terminals read the highest resistance while testing refrigerator compressor motor?

Start and run Common and run Start and common Start and compressor body

Correct Answer: Start and run

2) Which method is used to check the leakage of hydro fluoro carbon refrigerants?

Electric torch Litmus paper Sulphur candles Electronic leak detector

Correct Answer: Electronic leak detector

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

O<sub>2</sub> N<sub>2</sub> O<sub>3</sub> SO<sub>2</sub>

Correct Answer: N<sub>2</sub>

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

Expansion Compression Evaporation Condensation

Correct Answer: Evaporation

5) 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

Correct Answer: Removal of the thermostat sensor

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