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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Centrifugal
Miniature sealed unit
Axial
Piston type reciprocating

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

Negative
None of these
Positive
Zero

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Gives quiet operation
Gives noisy operation
Cools below 0°C
Requires little power consumption

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Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Compressor discharge
Receiver
Expansion valve
Evaporator

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Refrigeration and Air Conditioning
Nusselt number (NN) is given by

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

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Remains constant
Increases
Decreases
None of these

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MORE MCQ ON Refrigeration and Air Conditioning

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