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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Domestic refrigerators
Commercial refrigerators
Air conditioning
Gas liquefaction

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Decreases C.O.P
O.P remains unaltered
Increases C.O.P
Other factors decide C.O.P

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Refrigeration and Air Conditioning
The wet bulb depression indicates _________ humidity of the air.

Specific
None of these
Relative
Absolute

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Refrigeration and Air Conditioning
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be

Lack of cooling water
Water temperature being high
All of these
Dirty condenser surface

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Refrigeration and Air Conditioning
An evaporator is also known as

Cooling coil
All of these
Chilling coil
Freezing coil

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Refrigeration and Air Conditioning
Nusselt number (NN) is given by

NN = V²/t.cp
NN = hl/k
NN = μ cp/k
NN = ρ V l /μ

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MORE MCQ ON Refrigeration and Air Conditioning

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