Mechanical Engineering Questions And Answers :: Heat Transfer: part1



Mechanical Engineering : Heat Transfer QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

1.The time constant of a thermocouple is

the time taken to attain the final temperature to be measured
the time taken to attain 50% of the value of initial temperature difference
the time taken to attain 63.2% of the value of initial temperature difference
determined by the time taken to reach 100�C from 0�C
none of the above.

2.Thermal conductivity of water in general with rise in temperature

increases
decreases
remains constant
may increase or decrease depending on temperature
none of the above.

3.Which of the following is the case of heat transfer by radiation

blast furnace
heating of building
cooling of parts in furnace
heat received by a person from fireplace
all of the above.

4.Heat transfer takes place as per -

zeroth law of thermodynamics
first law of thermodynamic
second law of the thermodynamics
Kirchhoff law (e) Stefan's law.
opt 5

5.Thermal conductivity of air with rise in temperature

increases
decreases
remains constant
may increase or decrease depending on temperature
none of the above.

More Heat Transfer QUESTIONS AND ANSWERS available in next pages

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