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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

All of these
Water coolers
Room air conditioners
Domestic refrigerators

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

High boiling point
High latent heat of vaporisation
Tow specific heat of liquid
Higher critical temperature

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-11
R-12
R-22
Ammonia

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant pressure lines
Constant temperature lines
Constant total heat lines
Constant entropy lines

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Dry bulb temperature
Wet bulb temperature
Relative humidity
Dew point temperature

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

T₁/(T₂ - T₁)
(T₁ - T₂)/T₁
(T₂ - T₁)/T₁
T₂/(T₂ - T₁)

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MORE MCQ ON Refrigeration and Air Conditioning

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