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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Relative humidity
Dry bulb temperature
Dew point temperature

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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 - T₁)/T₁
T₂/(T₂ - T₁)
T₁/(T₂ - T₁)

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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

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

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Refrigeration and Air Conditioning
Most air cooled condensers are designed to operate with a temperature difference of

5°C
22°C
8°C
14°C

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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

Sulphur dioxide
Carbon dioxide
Lithium bromide
R-12

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible cooling of air

None of these
Decreases
Increases
Remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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