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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Specific humidity
Dry bulb temperature
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Higher
None of these
Same
Lower

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Refrigeration and Air Conditioning
The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

T₂/ (T₂ - T₁)
T₁ / (T₂ - T₁)
(T₁ - T₂)/T₁
(T₂ - T₁)/T₁

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Refrigeration and Air Conditioning
Wet bulb temperature is the temperature of air recorded by a thermometer, when

It is not affected by the moisture present in the air
The moisture present in it begins to condense
Its bulb is surrounded by a wet cloth exposed to the air
None of these

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

100
50
Zero
20

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Rankine
Reversed Carnot
Reversed Rankine
Carnot

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MORE MCQ ON Refrigeration and Air Conditioning

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