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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Gives quiet operation
Gives noisy operation
Requires little power consumption
Cools below 0°C

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

All of these
CO?
R-12
Ammonia

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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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Refrigeration and Air Conditioning
The relative coefficient of performance is

Theoretical COP/actual COP
Actual COP/theoretical COP
Actual COP × theoretical COP
None of these

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid

After passing through the expansion or throttle valve
After passing through the condenser
Before passing through the condenser
Before entering the expansion valve

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

None of these
μ/[1 - (1 - μ) (Ps/Pb)]
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
0.622 Pv/ (Pb - Pv)

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MORE MCQ ON Refrigeration and Air Conditioning

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