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Refrigeration and Air Conditioning Technician
CONDENSER EXPANSION VALVE AND EVAPORATOR
Set 3
Set 3
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Q9890
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Which type of drier filter is suitable for HFC refrigerants?
A
Molecular sieve type
B
Activated alumina
C
Activated carbon
D
Silica gel
Q9891
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What is the purpose of chemical spraying on finned condenser?
A
Flush out the condenser tubes
B
Remove the rust on the fins
C
Blow the dust from the fins
D
Correct the bends in fins
Q9892
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What is the advantage of using capillary tube as an expansion device?
A
Temperature balancing is easy
B
Pressure balancing is easy
C
Volume balancing is easy
D
Complicate design
Q9893
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Which component is connected in series with defrost heater in a frost free refrigerator?
A
Door switch
B
Cabinet bulb
C
Bimetal thermo
D
Heating element
Q9894
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How much minimum gap is left on either side of the refrigerator from the wall during installation?
A
5 cm
B
10 cm
C
15 cm
D
25 cm
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