McqMate
Sign In
Hamberger menu
McqMate
Sign in
Sign up
Home
Forum
Search
Ask a Question
Sign In
McqMate Copyright © 2025
→
Mechanical Engineering
→
Heat Transfer (HT)
→
A grey body has emissivity
Q.
A grey body has emissivity
A.
37,500 kg
B.
1
C.
less than 1
D.
more than 1
E.
0.5
Answer» C. less than 1
5.9k
0
Do you find this helpful?
22
View all MCQs in
Heat Transfer (HT)
Discussion
No comments yet
Login to comment
Related MCQs
A body is called grey if the monochromatic emissivity of the body is
Emissivity of a white polished body in comparison to a black body is
40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is
While the total emissivity of a perfect black body is unity, the same for a real body is
Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be
When a body is in thermal equilibrium with its surroundings, the absorptivity and the emissivity of the body are same. This Law is known as
Total emissivity of polished silver compared to black body is
The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit
Absorptivity of a body will be equal to its emissivity
What is the emissivity of a black body?