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Study MCQ
Refrigeration and Air Conditioning Technician
MULTI SPLIT AC AND CAR AIR CONDITIONING
Set 14
Set 14
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Q10184
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What is indicated by the bubbles in car AC's sight glass?
A
Pressure of air
B
Poor compression
C
Excess of refrigerant
D
Shortage of refrigerant
Q10185
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Why the idler pulley is used in belt driven car AC?
A
Decrease the belt vibration
B
Increase the belt tension
C
Increase the feathering
D
Decrease the belt tension
Q10186
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What is the effect of increased out door temperature in car AC?
A
Compressor runs more time
B
Compressor runs less time
C
Performance remains the same
D
Performance increases
Q10187
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Which causes the clogged orifice in TEV of car AC system?
A
Nitrogen
B
Oxygen
C
Moisture
D
Non condensable gases
Q10188
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What is the effect of longer suction and liquid piping in AC?
A
No pressure rise
B
More pressure drop
C
Less pressure drop
D
Medium pressure rise
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