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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Curved line
Horizontal line
Inclined line
Vertical line

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Lower than
Same as
Higher than
None 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)R
O.P.)P = (
(
O.P)P = (
O.P)P = (
O.P.)R + 1
O.P.)R + 2
(
(
O.P)R - 1
O.P.)P = (
(

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Superheated vapour region
Wet vapour region
Sub-cooled liquid region
None of the listed here

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Refrigeration and Air Conditioning
During sensible cooling,

Partial pressure of vapour remains constant
Relative humidity remains constant
Wet bulb temperature increases
Specific humidity increases

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

None of these
Non-frosting evaporator
Frosting evaporator
Defrosting evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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