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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

cooling below 0°C
very little power consumption
quiet operation
noisy operation

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

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

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Refrigeration and Air Conditioning
The air cooling system mostly used in transport type aircrafts is

Bootstrap air cooling system
Simple evaporative air cooling system
All of the listed here
Simple air cooling system

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Refrigeration and Air Conditioning
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

Collect vapours
Detect liquid in vapour
Superheat the vapour
Collect liquid refrigerant and prevent it from going to compressor

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Relative humidity
Specific humidity
Dry bulb temperature
Wet bulb temperature

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Refrigeration and Air Conditioning
A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

3.33
2.33
4.33
1.33

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MORE MCQ ON Refrigeration and Air Conditioning

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