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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

2.15
5.12
1.25
1

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Refrigeration and Air Conditioning
The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called

Coefficient of performance of heat pump
Refrigerating efficiency
Relative coefficient of performance
Coefficient of performance of refrigeration

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Refrigeration and Air Conditioning
Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system

Strong solution to weak solution
Ammonia vapours to weak solution
Weak solution to strong solution
Strong solution to ammonia vapour

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is

High pressure saturated liquid
Dry vapour
Very wet vapour
Wet vapour

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

Power per TR is low
Mass of the refrigeration equipment is low
Mass of refrigerant circulated in the system is low
System has high C.O.P.

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MORE MCQ ON Refrigeration and Air Conditioning

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