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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Freon group of refrigerants are

Toxic
Non-inflammable and toxic
Inflammable
Nontoxic and non-inflammable

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Refrigeration and Air Conditioning
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

0.67
0.6
0.4
0.376

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Refrigeration and Air Conditioning
The human body feels comfortable when the heat stored in the body is

Zero
Positive
Negative
None of these

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Refrigeration and Air Conditioning
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

Detect liquid in vapour
Collect liquid refrigerant and prevent it from going to compressor
Collect vapours
Superheat the vapour

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Refrigeration and Air Conditioning
Which of the following refrigerant has the lowest freezing point?

R-11
Ammonia
R-12
R-22

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Refrigeration and Air Conditioning
When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be

Negative
Positive
Zero
None of the listed here

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MORE MCQ ON Refrigeration and Air Conditioning

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