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Study MCQ
Refrigeration and Air Conditioning Technician
CHILLER SYSTEM
Set 10
Set 10
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Q9838
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How the brine freezing on cooling coil is prevented in ice plant?
A
Add water to brine
B
Add glycol to brine
C
Reduce concentration
D
Increase salt concentration
Q9839
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What is the cause of discolouration of oil in a compressor?
A
Moisture in oil
B
Dirty drier filter
C
Low pressure of oil
D
Liquid refrigerant in oil
Q9840
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What is the effect if the oil return from oil separator to the compressor is blocked?
A
Suction pressure rises
B
Discharge pressure decreases
C
Compressor oil level falls down
D
Compressor oil level increases
Q9841
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What is the cause of compressor knocking sound in chiller AC plant?
A
High oil level
B
Liquid refrigerant entry
C
Shortage of refrigerant
D
Air entered into system
Q9842
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Which causes the filter drier to become cold in chiller AC plant?
A
Over charge
B
Under charge
C
High condensing pressure
D
Partial blocking of filter drier
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