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Study MCQ
Refrigeration and Air Conditioning Technician
CENTRAL AIR CONDITIONING
Set 5
Set 5
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Q9786
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Why the stainless-steel metal is used to make evaporator in ice plant?
A
Erosive
B
Galvanic
C
Reactive
D
Non corrosive
Q9787
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Which gauge is connected to the AC plant system before doing pump down operation?
A
Compound gauge
B
Oil pressure gauge
C
High pressure gauge
D
Water pressure gauge
Q9788
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Why the glass wool insulation is avoided in ducts?
A
Less strength
B
High conductivity
C
Not resistant to water
D
Allows vapour transmission
Q9789
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What is the effect of scale formation inside the tubes of chiller in industrial AC plant?
A
Reduce heat transfer
B
Increase heat transfer
C
Increase suction pressure
D
Decrease power consumption
Q9790
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Which parameter is checked if the air flow in supply duct is reduced in central AC plant?
A
Condenser temperature
B
Cooling water temperature
C
Blower motor ampere/speed
D
Compressor discharge temperature
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