The emissivity for a black body is - Heat Transfer, Refrigeration and Air Conditioning Quiz

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

The emissivity for a black body is

0.5

0.75

Correct Answer : Option (A) : 1

Recently Updated in Heat Transfer, Refrigeration and Air Conditioning Questions

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

Wein's law

Stefan's law

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