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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is

More or less depending on ambient conditions
Same
Less
More

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

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

R-12
Sulphur dioxide
Carbon dioxide
Lithium bromide

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and dew point temperature, is called

Degree of saturation
Dew point depression
Dry bulb depression
Wet bulb depression

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Refrigeration and Air Conditioning
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to

Orange
Yellow
Bright green
Red

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

Equal
Small
High
Anything

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MORE MCQ ON Refrigeration and Air Conditioning

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