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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Dry bulb temperature
Dew point temperature
Wet bulb temperature
Specific humidity

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Remains constant
Increases
None of these
Decreases

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid

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

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Refrigeration and Air Conditioning
Which of the following statement is correct for ammonia as a refrigerant?

It reacts with copper and its alloys.
It is toxic to mucous membranes.
All of these
It requires large displacement per TR compared to fluoro carbons.

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Refrigeration and Air Conditioning
Moisture should be removed from refrigerants to avoid

Freezing at the expansion valve
All of these
Restriction to refrigerant flow
Corrosion of steel plates

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Refrigeration and Air Conditioning
The humidification process, on the psychrometric chart is shown by

Curved line
Inclined line
Vertical line
Horizontal line

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MORE MCQ ON Refrigeration and Air Conditioning

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