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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

Single fluid
Three fluids
Two fluids
None of the listed here

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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

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

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Refrigeration and Air Conditioning
Formation of frost on evaporator in refrigerator

Increases heat transfer rate
Results in loss of heat due to poor heat transfer
Can be avoided by proper design
Is immaterial

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Sub-cooled liquid region
Wet vapour region
Superheated vapour region
None of the listed here

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Refrigeration and Air Conditioning
Air refrigerator works on

None of these
Reversed Carnot cycle
Both (A) and (B)
Bell Coleman cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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