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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

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

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Refrigeration and Air Conditioning
The relative humidity lines on a psychrometric chart are

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

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

Ammonia
R-11
R-12
R-22

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Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Ammonia and lithium bromide
Ammonia and water
Water and water
Water and lithium bromide

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Refrigeration and Air Conditioning
During sensible cooling,

Relative humidity remains constant
Specific humidity increases
Wet bulb temperature increases
Partial pressure of vapour remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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