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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

Saturated air
Dry air
Moist air
Specific humidity

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 - C.O.P.
1 + C.O.P
1 - (1/C.O.P)
1 + (1/C.O.P)

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

Decreases
Increases
None of these
Remains constant

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

Halide torch
Soap and water
Sulphur sticks
All of these

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Refrigeration and Air Conditioning
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

(
O.P.)P = (
O.P)P = (
O.P)P = (
O.P)R - 1
O.P.)P = (
(
O.P.)R + 1
(
O.P.)R + 2
(
O.P)R

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

None of these
Increases
Decreases
Remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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