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Study MCQ
Refrigeration and Air Conditioning Technician
CHILLER SYSTEM
Set 9
Set 9
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Q9833
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What is the cause of bubbles in liquid line sight glass after gas charging the system?
A
Excess refrigerant
B
Shortage of refrigerant
C
Oil bubbles in sight glass
D
Nitrogen trapped in system
Q9834
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What is the effect if the refrigeration system is started before chilled water pump?
A
No cooling
B
Water warms in chillier
C
Water freezes in chillier
D
Excess of heat transfer
Q9835
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Which control trips if the expansion valve inlet strainer is blocked in chiller AC plant?
A
Thermostat control
B
Low pressure cut out
C
Oil pressure cut out
D
High pressure cut out
Q9836
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What is the effect of improper alignment of machines while installing a central AC plant?
A
Silent operation
B
Excess of wear and tear
C
Less noise and vibration
D
Less power consumption
Q9837
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What is the remedy for no lubrication even if the sight glass shows proper oil level?
A
Replace oil pump
B
Add oil to crankcase
C
Replace oil pressure gauge
D
Replace oil pressure cut out
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