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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
190

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

190) Dry bulb temperature is the temperature of air recorded by a thermometer, when

it is not affected by the moisture present in the air

its bulb is surrounded by a wet cloth exposed to the air

the moisture present in it begins to condense

none of the above

Answer is:

it is not affected by the moisture present in the air

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

191) In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

heated and dehumidified

heated and humidified

cooled and humidified

cooled and dehumidified

Answer is:

heated and humidified

192) A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

automatic expansion valve

high side float valve

thermostatic expansion valve

low side float valve

Answer is:

low side float valve

193) The atmospheric air at dry bulb temperature of 15 Degree Centigrade enters a heating coil maintained at 40 Degree Centigrade. The air leaves the heating coil at 25 Degree Centigrade. The by-pass factor of the heating coil is

0.376

0.4

0.6

0.67

Answer is:

0.6

194) The final relative humidity of the air during cooling and dehumidification is generally __________ than that of entering air.

lower

higher

equal

none of these

Answer is:

higher

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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