34) Moisture would find its way into insulation by vapour pressure unless it is prevented by
Answer is:
a vapour seal
Related Heat transfer MCQ with Answers
35) Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in
Answer is:
boiler.
Answer is:
all bodies above absolute zero emit radiation
Answer is:
all of the above
Explanation:
The term radiation is applied to the kinds of processes which transmit energy by means of electromagnetic waves. The amount of radiation mainly depends upon the nature of body, temperature of the body and type of surface of the body.
when the radiations are falling on a body, three things happen, i.e. a part of the radiations are absorbed by the body, a part of the radiations are reflected and the remaining radiations are transmitted through the body.
