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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

very little power consumption
quiet operation
noisy operation
cooling below 0°C

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Refrigeration and Air Conditioning
In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)

1 - B. P.F.
1/ B.P.F.
P.F. - 1
1 + B.P.F.

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

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

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

Increased to a value above its critical temperature
None of these
Equal to critical temperature
Reduced to a value below its critical temperature

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Expansion valve and evaporator
Compressor and evaporator
Compressor and condenser
Condenser and expansion valve

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

420 kJ/min
620 kJ/min
210 kJ/min
21 kJ/min

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MORE MCQ ON Refrigeration and Air Conditioning

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