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 2024 and IES 2024 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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