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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The thermostatic expansion valve is used in ________ type of evaporators.

None of these
Flooded
Dry
DX coil

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Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

Any value
Low
High
Optimum

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Brass
Steel
Copper
Aluminium

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

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

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Refrigeration and Air Conditioning
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

Heated and dehumidified
Cooled and dehumidified
Heated and humidified
Cooled and humidified

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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