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Refrigeration and Air Conditioning Technician
CONDENSER EXPANSION VALVE AND EVAPORATOR
Set 6
Set 6
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Q9905
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What is the use of dehydrator?
A
Absorb oil
B
Absorb heat
C
Absorb refrigerant
D
Absorb moisture
Q9906
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How pressure drop is achieved in capillary tube of refrigeration cycle?
A
The friction between refrigerant and tube
B
The friction between refrigerant and oil
C
The friction between piston and cylinder
D
The friction between belt and pulley
Q9907
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What is the desiccant used in dehydrator of hydrocarbon charged RAC unit?
A
Silica gel
B
Ammonia
C
Sulphur dioxide
D
Calcium chloride
Q9908
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Which is the constant operating condition of TEV?
A
Super heat at suction line point
B
Evaporator pressure at its inlet
C
Enthalpy at the evaporator outlet
D
Entropy at the condenser outlet
Q9909
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Which type of defrosting method is used in frost free refrigerator?
A
Hot water defrosting
B
Manual defrosting
C
Hot gas defrosting
D
Electric defrosting
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