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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

Three fluids
Two fluids
Single fluid
None of the listed here

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Aluminium
Steel
Brass
Copper

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

Relative
None of these
Specific
Absolute

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

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Refrigeration and Air Conditioning
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

Cooled and humidified
Heated and humidified
Cooled and dehumidified
Heated and dehumidified

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Equal
Smaller
Bigger
Smaller/bigger depending on capacity

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