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Refrigeration and Air Conditioning

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

Horizontal line
Vertical line
Curved line
Inclined line

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Refrigeration and Air Conditioning
In a psychrometric chart, specific humidity (moisture content) lines are

Curved lines
Horizontal and non-uniformly spaced
Vertical and uniformly spaced
Horizontal and uniformly spaced

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

1.86 kW
18.6 kW
7.44 kW
3.72 kW

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

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

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Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Condenser
Compressor
Expansion valve
Evaporator

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Dry bulb temperature
Relative humidity
Wet bulb temperature
Specific humidity

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MORE MCQ ON Refrigeration and Air Conditioning

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