Thermal diffusivity is a - Heat Transfer, Refrigeration and Air Conditioning Quiz

Mechanical Engineering : Heat Transfer, Refrigeration and Air Conditioning - Quiz(MCQ)

Thermal diffusivity is a

function of temperature

dimensionless parameter

physical property of a substance

All of the above

Correct Answer : Option (C) : physical property of a substance

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The value of the wave length for maximum emissive power is given by

Wein's law

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Planck's law

Kirchhoff's law

Correct Answer : Wein's law

Emissivity of a body will be equal to its absorptivity at all temperatures.

Yes

Can Not Say

None of the above

Correct Answer : Yes

During dehumidification process, __________ remains constant.

specific humidity

dry bulb temperature

relative humidity

wet bulb temperature

Correct Answer : dry bulb temperature