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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

26°C DBT and 60% RH
20°C DBT and 50% RH
20°C DBT and 60% RH
26°C DBT and 50% RH

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Dry bulb temperature
Relative humidity
Dew point temperature

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Refrigeration and Air Conditioning
The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

(h2 - hA)/ (h1 - h2)
(hA - h2)/ (h1 - h2)
(hA - h1)/ (h2 - h1)
(h1 - h2)/ (hA - h2)

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Otto cycle
Reversed Rankine cycle
Reversed Joule cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
The wet bulb depression indicates _________ humidity of the air.

None of these
Absolute
Relative
Specific

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Expansion valve
Condenser
Compressor
Evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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