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
21. A grey body is one whose absorptivity
A. varies with temperature
B. varies with wavelength of the incident ray
C. is equal to its emissivity
D. does not vary with temperature and. wavelength of the incident ray
E. none of the above.
Explanation:
22. Emissivity of a white polished body in comparison to a black body is
A. higher
B. lower
C. same
D. depends upon the shape of body
E. none of the above.
Explanation:
23. Which of the following is the case of heat transfer by radiation
A. blast furnace
B. heating of building
C. cooling of parts in furnace
D. heat received by a person from fireplace
E. all of the above.
Explanation:
24. The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as
A. emissivity
B. transmissive
C. reflectivity
D. intensity of radiation
E. absorptivity.
Explanation:
25. Which of the following has least value of conductivity
A. glass
B. water
C. plastic
D. rubber
E. air.
Explanation:
« Prev123456789101112131415161718Next »