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Engineering
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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
291

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

291) In a psychrometric chart, specific humidity (moisture content) lines are

vertical and uniformly spaced

horizontal and uniformly spaced

horizontal and non-uniformly spaced

curved lines

Answer is:

horizontal and uniformly spaced

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

292) The expression Q = ? AT⁴ is called

Fourier equation

Stefan-Boltzmann equation

Newton-Rikhmann equation

Joseph-Stefan equation

Answer is:

Stefan-Boltzmann equation

293) Thermal conductivity of solid metals __________ with rise in temperature.

remains same

decreases

increases

none of these

Answer is:

decreases

294) The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

dry bulb temperature

wet bulb temperature

dew point temperature

specific humidity

Answer is:

dew point temperature

295) A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

1.33

2.33

3.33

4.33

Answer is:

2.33 Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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291) In a psychrometric chart, specific humidity (moisture content) lines are

horizontal and uniformly spaced

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

292) The expression Q = ? AT4 is called

Stefan-Boltzmann equation

293) Thermal conductivity of solid metals __________ with rise in temperature.

decreases

294) The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

dew point temperature

295) A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

2.33

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

292) The expression Q = ? AT⁴ is called