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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Ammonia is

Non-inflammable
Non-toxic
Toxic and non-inflammable
Highly toxic and inflammable

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

5
0.2
6
1.2

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

Two cooling turbines and one heat exchanger
One cooling turbine and two heat exchangers
Two cooling turbines and two heat exchangers
One cooling turbine and one heat exchanger

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Refrigeration and Air Conditioning
Aqua ammonia is used as refrigerant in the following type of refrigeration system

Absorption
Compression
Indirect
Direct

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

Dry bulb temperature
Specific humidity
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Water at 0°C
Ice at 4°C
Mixture of ice and water under equilibrium conditions
Solid and dry ice

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MORE MCQ ON Refrigeration and Air Conditioning

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