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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

Decreases C.O.P.
None of these
Does not alter C.O.P.
Increases C.O.P.

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

More
Same
More or less depending on ambient conditions
Less

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

Non-toxic
Non-flammable
High boiling point
Non-explosive

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Refrigeration and Air Conditioning
The condition of refrigerant as it leaves the compressor in a vapour compression system is

Wet vapour
Dry saturated vapour
Saturated liquid
Superheated vapour

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Refrigeration and Air Conditioning
An evaporator is also known as

Cooling coil
All of these
Freezing coil
Chilling coil

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Refrigeration and Air Conditioning
In a psychrometric chart, specific humidity (moisture content) lines are

Horizontal and non-uniformly spaced
Vertical and uniformly spaced
Horizontal and uniformly spaced
Curved lines

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