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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

0.3
0.6
0.67
1.5

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

After passing through the expansion or throttle valve
After passing through the condenser
Before passing through the condenser
Before entering the expansion valve

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Refrigeration and Air Conditioning
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

Evaporator to the thermostat
Condenser to the expansion valve
Condenser to the evaporator
Expansion valve to the evaporator

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-12
Ammonia
R-22
R-11

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Refrigeration and Air Conditioning
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to

Red
Yellow
Orange
Bright green

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the left of saturated liquid line
None of these
To the right of saturated liquid line
Between the saturated liquid line and saturated vapour line

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