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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Freon group of refrigerants are

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

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Refrigeration and Air Conditioning
The optimum effective temperature for human comfort is

Lower in winter than in summer
Not dependent on season
Higher in winter than in summer
Same in winter and summer

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Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Dew point temperature
Dry bulb temperature
Wet bulb temperature
Specific humidity

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Halide torch which on detection produces greenish flame lighting
Sulphur sticks which on detection gives white smoke
Smelling
Using reagents

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Higher than
None of the listed here
Same as
Lower than

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Refrigeration and Air Conditioning
Air refrigerator works on

Reversed Carnot cycle
None of these
Both (A) and (B)
Bell Coleman cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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