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Refrigeration and Air Conditioning

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
Nusselt number (NN) is given by

NN = ρ V l /μ
NN = V²/t.cp
NN = hl/k
NN = μ cp/k

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant total heat lines
Constant entropy lines
Constant temperature lines
Constant pressure lines

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

Halide torch
All of these
Sulphur sticks
Soap and water

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Reversed Carnot
Rankine
Carnot
Reversed Rankine

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Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m/h
m/hK
m²/hK
m²/h

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MORE MCQ ON Refrigeration and Air Conditioning

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