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REFRIGERATION DIRECT COOL - Practice Mode
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Refrigeration and Air Conditioning Technician
REFRIGERATION DIRECT COOL
Practice Mode
1) Which is the hydrocarbon refrigerant?
R 12
R123
R 500
R 600a
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Correct Answer: R 600a
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1) Which is the hydrocarbon refrigerant?
R 12
R123
R 500
R 600a
2) Which refrigerant property is desirable for V.C system?
Low boiling point
Corrosive to metals
Low latent heat valve
Low Dielectric strength
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Correct Answer: Low boiling point
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2) Which refrigerant property is desirable for V.C system?
Low boiling point
Corrosive to metals
Low latent heat valve
Low Dielectric strength
3) Which type of compressor is used as a vacuum pump?
Reciprocating
Centrifugal
Rotary
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Correct Answer: Rotary
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3) Which type of compressor is used as a vacuum pump?
Reciprocating
Centrifugal
Rotary
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4) What is the full form of the relay - PTC?
Positive temperature coefficient
Permanent temperature control
Polar terminal checking
Positive terminal circuit
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Correct Answer: Positive temperature coefficient
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4) What is the full form of the relay - PTC?
Positive temperature coefficient
Permanent temperature control
Polar terminal checking
Positive terminal circuit
5) Which refrigerant blend is highly flammable?
HCFC
HFC
CFC
HC
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Correct Answer: HC
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5) Which refrigerant blend is highly flammable?
HCFC
HFC
CFC
HC
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