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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

More than
None of these
Less than
Equal to

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

All of these
Soap and water
Sulphur sticks
Halide torch

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

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Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

(Actual C.O.P.) × (Theoretical C.O.P.)
None of these
(Actual C.O.P.) /(Theoretical C.O.P.)
(Theoretical C.O.P.)/ (Actual C.O.P.)

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Dry bulb temperature
Dew point temperature
Specific humidity

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Refrigeration and Air Conditioning
The boiling point of ________ is 10.5°C.

Ammonia
R-12
Carbon dioxide
Sulphur dioxide

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MORE MCQ ON Refrigeration and Air Conditioning

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