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Study MCQ
Refrigeration and Air Conditioning Technician
REFRIGERATION DIRECT COOL
Set 1
Set 1
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Q10271
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Which is the hydrocarbon refrigerant?
A
R 12
B
R123
C
R 500
D
R 600a
Q10272
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Which refrigerant property is desirable for V.C system?
A
Low boiling point
B
Corrosive to metals
C
Low latent heat valve
D
Low Dielectric strength
Q10273
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Which type of compressor is used as a vacuum pump?
A
Reciprocating
B
Centrifugal
C
Rotary
D
Scroll
Q10274
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What is the full form of the relay - PTC?
A
Positive temperature coefficient
B
Permanent temperature control
C
Polar terminal checking
D
Positive terminal circuit
Q10275
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Which refrigerant blend is highly flammable?
A
HCFC
B
HFC
C
CFC
D
HC
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