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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
172

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

172) A vapour absorption refrigeration system

gives noisy operation

gives quiet operation

requires little power consumption

cools below 0 Degree Centigrade

Answer is:

gives quiet operation

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

173) The rato of energy transferred by convection to that by conduction is called

Stanton number

Nusselt number

Biot number

Peclet number

Answer is:

Nusselt number

174) A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of

25 kJ/kg

50 kJ/kg

l00 kJ/kg

125 kJ/kg

Answer is:

50 kJ/kg

175) Wet bulb temperature indicates the moisture content in air.

Agree

Disagree

Answer is:

Agree

176) A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100 Degree Centigrade and leaves at 60 Degree Centigrade. A co

20 Degree Centigarde

40 Degree Centigarde

60 Degree Centigarde

66.7 Degree Centigarde

Answer is:

20 Degree Centigarde

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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