MULTI SPLIT AC AND CAR AIR CONDITIONING - Practice Mode

1) What is indicated by the bubbles in car AC's sight glass?

Pressure of air Poor compression Excess of refrigerant Shortage of refrigerant

Correct Answer: Shortage of refrigerant

2) Why the idler pulley is used in belt driven car AC?

Decrease the belt vibration Increase the belt tension Increase the feathering Decrease the belt tension

Correct Answer: Decrease the belt vibration

3) What is the effect of increased out door temperature in car AC?

Compressor runs more time Compressor runs less time Performance remains the same Performance increases

Correct Answer: Compressor runs more time

4) Which causes the clogged orifice in TEV of car AC system?

Nitrogen Oxygen Moisture Non condensable gases

Correct Answer: Moisture

5) What is the effect of longer suction and liquid piping in AC?

No pressure rise More pressure drop Less pressure drop Medium pressure rise

Correct Answer: More pressure drop

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