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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Relative humidity
Dew point temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

26°C DBT and 50% RH
26°C DBT and 60% RH
20°C DBT and 50% RH
20°C DBT and 60% RH

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Refrigeration and Air Conditioning
On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

Takes place at constant pressure
Takes place at constant temperature
Involves no change in volume
Takes place at constant entropy

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Refrigeration and Air Conditioning
The freezing point of R-12 is

-135.8°C
-107.7°C
-95.2°C
-86.6°C

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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
Very wet vapour
Dry vapour
Wet vapour

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Reversed Carnot cycle
None of these
Carnot cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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