Heat Transfer - Interview Questions | Exam2Win

Take a timed mock test specifically for Heat Transfer.

1. The time constant of a thermocouple is

A. the time taken to attain the final temperature to be measured

B. the time taken to attain 50% of the value of initial temperature difference

C. the time taken to attain 63.2% of the value of initial temperature difference

D. determined by the time taken to reach 100�C from 0�C

E. none of the above.

Explanation:

2. Cork is a good insulator because it has

A. free electrons

B. atoms colliding frequency

C. low density

D. porous body

E. all of the above.

Explanation:

3. Thermal conductivity of non-metallic amorphous solids with decrease in temperature

A. increases

B. decreases

C. remains constant

D. may increase or decrease depending on temperature

E. unpredictable.

Explanation:

4. Sensible heat is the heat required to

A. change vapour into liquid

B. change liquid into vapour

C. increase the temperature of a liquid of vapour

D. convert water into steam and superheat it

E. convert saturated steam into dry steam.

Explanation:

5. Heat is closely related with

A. liquids

B. energy

C. temperature

D. entropy

E. enthalpy.

Explanation:

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