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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Absorber
Condenser
Condenser, absorber and separator (rectifier)
Evaporator

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

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Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Domestic refrigerators
Room air conditioners
Water coolers
All of these

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Refrigeration and Air Conditioning
The dry bulb temperature lines, on the psychrometric chart are

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

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

High, of the order of 25°
Zero
Any value
As low as possible (3 to 11°C)

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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