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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The thermostatic expansion valve is used in ________ type of evaporators.

Flooded
None of these
Dry
DX coil

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called

Wet bulb temperature
Dry bulb temperature
Dew point temperature
None of these

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

Curved line
Inclined line
Vertical line
Horizontal line

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

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Refrigeration and Air Conditioning
In Electrolux refrigerator

Hydrogen evaporates in ammonia
Ammonia is absorbed in hydrogen
Ammonia evaporates in hydrogen
Ammonia is absorbed in water

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

None of these
Higher than
Lower than
Same as

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