Heat and Mass Transfer MCQs
Practice free Heat and Mass Transfer multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 163 questions — no login required.
Question 55easy
Which of the following property of air does not increase with rise in temperature?
Question 56hard
Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of
Question 57medium
Thermal conductivity of glass wool varies from sample to sample because of variation in
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Question 58hard
Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by
Question 59hard
According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to
Question 60hard
The critical radius is the insulation radius at which the resistance to heat flow is
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Question 61hard
The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles caused by some mechanical means, is known as
Question 62hard
Joule sec is the unit of
Question 63hard
Which of the following statement is correct?