Home > Mechanical Engineering > Heat Transfer

Heat Transfer - Interview Questions and Answers

Prepare for your technical interview with these Heat Transfer questions.

Ready to test your skills?

Take a timed mock test specifically for Heat Transfer.

Start Mock Test
26. Which of the following has maximum value of thermal conductivity
A. aluminium
B. steel
C. brass
D. copper
E. lead.
Explanation:
27. According to Prevost theory of heat exchange
A. it is impossible to transfer heat from low temperature source to t high temperature source
B. heat transfer by radiation requires no medium
C. all bodies above absolute zero emit radiation
D. heat transfer in most of the cases takes place by combination of conduction, convection and radiation
E. rate of heat transfer depends on thermal conductivity and temperature difference.
Explanation:
28. A non-dimensional number generally associated with natural convection heat transfer is
A. Grashoff number
B. Nusselt number
C. Weber number
D. Prandtl number
E. Reynold number.
Explanation:
29. Heat conducted through unit area and unit thick face per unit time when temperature difference between opposite faces is unity,is called
A. thermal resistance
B. thermal coefficient
C. temperature gradient
D. thermal conductivity
E. heat-transfer.
Explanation:
30. Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in
A. electric heater
B. steam condenser
C. melting of ice
D. refrigerator condenser coils
E. boiler.
Explanation:
« Prev123456789101112131415161718Next »