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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Higher than
None of these
Same as
Lower than

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

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Refrigeration and Air Conditioning
The evolution of heat of solution takes place in ammonia absorption plant when

Ammonia vapour is driven out of solution
Lithium bromide mixes with ammonia
Weak solution mixes with strong solution
Ammonia vapour goes into solution

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Expansion valve
Compressor
Condenser
Evaporator

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Refrigeration and Air Conditioning
The human body feels comfortable when the heat stored in the body is

Positive
None of these
Zero
Negative

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

Condenser, absorber and separator (rectifier)
Absorber
Evaporator
Condenser

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