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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
347

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

347) It is desired to condition the outside air from 70% relative humidity and 45 Degree Centigrade dry bulb temperature to 50% relative humidity and 25 Degree Centigrade dry bulb temperature (room condition). The practical arrangement will be

dehumidification

cooling and humidification

cooling and dehumidification

dehumidification and pure sensible cooling

Answer is:

cooling and dehumidification

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

348) During heating and dehumidification process, dry bulb temperature

remains constant

increases

decreases

none of these

Answer is:

increases

349) The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

(T1)/(T2-T1)

(T2-T1)/(T1)

(T1-T2)/(T1)

(T2)/(T2-T1)

Answer is:

(T1)/(T2-T1)

350) A refrigerant compressor is used to

raise the pressure of the refrigerant

raise the temperature of the refrigerant

circulate the refrigerant through the refrigerating system

all of the above

Answer is:

all of the above

351) In which of the following refrigeration system, waste heat can be effectively used?

Vapour compression cycle

Vapour absorption cycle

Air refrigeration cycle

none of these

Answer is:

Vapour absorption cycle

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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347) It is desired to condition the outside air from 70% relative humidity and 45 Degree Centigrade dry bulb temperature to 50% relative humidity and 25 Degree Centigrade dry bulb temperature (room condition). The practical arrangement will be

cooling and dehumidification

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

348) During heating and dehumidification process, dry bulb temperature

increases

349) The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T1 = Lowest absolute temperature, and T2 = Highest absolute temperature)

(T1)/(T2-T1)

350) A refrigerant compressor is used to

all of the above

351) In which of the following refrigeration system, waste heat can be effectively used?

Vapour absorption cycle

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

349) The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)