Heat Transfer MCQ Multiple Choice Questions Answers

Q: 1. Thermal diffusivity is

Correct Answer is: used as mathematical model

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

Correct Answer is: cooling of parts in furnace

Q: 4. Sensible heat is the heat required to

Correct Answer is: convert water into steam and superheat it

Q: 5. Total heat is the heat required to

Correct Answer is: increase the temperature of a liquid or vapour

Q: 7. When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by

Correct Answer is: conduction and convection

Q: 8. When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

Correct Answer is: conduction and convection

Q: 10. Heat transfer in liquid and gases takes place by

Correct Answer is: conduction and convection

Q: 11. Heat flows from one body to other when they have

Correct Answer is: different atomic structure

Q: 12. The amount of heat flow through a body by conduction is

Correct Answer is: dependent upon the material of the body

Q: 13. Thermal diffusivity of a substance is

Correct Answer is: inversely proportional to specific heat

Heat Transfer Multiple Choice Questions (MCQs) are essential practice tools for students and exam aspirants. These questions help you test your understanding and prepare for various assessments effectively.

About Heat Transfer MCQ Questions

Heat Transfer MCQs cover fundamental concepts such as conduction, convection, and radiation. They explore the principles of heat transfer, thermal resistance, and heat exchangers, providing a comprehensive understanding of the subject.

Why Practice Heat Transfer Objective Questions?

Practicing Heat Transfer MCQs offers several benefits. They help you prepare for school and college exams, competitive tests, and job interviews. Regular practice enhances your problem-solving skills, reinforces key concepts, and builds confidence in your knowledge.

Who Should Use These MCQs?

Heat Transfer MCQ Questions for Practice

1. Thermal diffusivity is

a dimensionless parameter
function of temperature
used as mathematical model
a physical property of the material

2. Which of the following has maximum value of thermal conductivity

aluminium
steel
brass
copper

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

4. Sensible heat is the heat required to

change vapour into liquid
change liquid into vapour
increase the temperature of a liquid of vapour
convert water into steam and superheat it

5. Total heat is the heat required to

change vapour into liquid
change liquid into vapour
increase the temperature of a liquid or vapour
convert water into steam and superheat it

6. Thermal conductivity of glass-wool varies from sample to sample because of variation in

composition
density
porosity
all of the above.

7. When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by

conduction
convection
radiation
conduction and convection

8. When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

conduction
convection
radiation
conduction and convection

9. When heat is Transferred by molecular collision, it is referred to as heat transfer by

conduction
convection
radiation
scattering

10. Heat transfer in liquid and gases takes place by

conduction
convection
radiation
conduction and convection

11. Heat flows from one body to other when they have

different heat contents
different specific heat
different atomic structure
different temperatures

12. The amount of heat flow through a body by conduction is

directly proportional to the surface area of the body
directly proportional to the temperature difference on the two faces of the body
dependent upon the material of the body
all of the above.

13. Thermal diffusivity of a substance is

directly proportional to thermal conÂ¬ductivity
inversely proportional to density of substance
inversely proportional to specific heat
all of the above

14. Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in

electric heater
steam condenser
melting of ice
boiler.

15. Pick up the wrong case. Heat flowing from one side to other depends directly on

face area
time
thickness
temperature difference

16. Cork is a good insulator because it has

free electrons
atoms colliding frequency
low density
porous body

17. Which of the following has least value of conductivity

glass
water
plastic
air.

18. Moisture would find its way into insulation by vapour pressure unless it is prevented by

high thickness of insulation
high vapour pressure
less thermal conductivity insulator
a vapour seal

19. Which of the following is a case of steady state heat transfer

I.C. engine
air preheaters
heating of building in winter
none of the above.

20. The insulation ability of an insulator with the presence of moisture would

increase
decrease
remain unaffected
may increase/decrease depending on temperature and thickness of insulation

21. Thermal conductivity of solid metals with rise in temperature normally

increases
decreases
remains constant
may increase or decrease depending on temperature

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

increases
decreases
remains constant
may increase or decrease depending on temperature

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

increases
decreases
remains constant
may increase or decrease depending on temperature

24. Thermal conductivity of air with rise in temperature

increases
decreases
remains constant
may increase or decrease depending on temperature

25. Heat transfer by radiation mainly depends upon

its temperature
nature of the body
kind and extent of its surface
all of the above

26. The thermal diffusivities for solids are generally

less than those for gases
jess than those for liquids
more than those for liquids and gases
more or less same as for liquids and gases

27. Heat is closely related with

liquids
energy
temperature
entropy

28. Thermal diffusivity of a substance is .

proportional of thermal conductivity
inversely proportional to k
proportional to (k)
inversely proportional to k2

29. All radiations in a black body are

reflected
refracted
transmitted
absorbed

30. Which of the following is expected to have highest thermal conductivity

steam
solid ice
melting ice
water

Heat Transfer MCQ Multiple Choice Questions Answers | Quiz for Practice

About Heat Transfer MCQ Questions

Why Practice Heat Transfer Objective Questions?

Who Should Use These MCQs?

Heat Transfer MCQ Questions for Practice

1. Thermal diffusivity is

2. Which of the following has maximum value of thermal conductivity

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

4. Sensible heat is the heat required to

5. Total heat is the heat required to

6. Thermal conductivity of glass-wool varies from sample to sample because of variation in

7. When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by

8. When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

9. When heat is Transferred by molecular collision, it is referred to as heat transfer by

10. Heat transfer in liquid and gases takes place by

11. Heat flows from one body to other when they have

12. The amount of heat flow through a body by conduction is

13. Thermal diffusivity of a substance is

14. Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in

15. Pick up the wrong case. Heat flowing from one side to other depends directly on

16. Cork is a good insulator because it has

17. Which of the following has least value of conductivity

18. Moisture would find its way into insulation by vapour pressure unless it is prevented by

19. Which of the following is a case of steady state heat transfer

20. The insulation ability of an insulator with the presence of moisture would

21. Thermal conductivity of solid metals with rise in temperature normally

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

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

24. Thermal conductivity of air with rise in temperature

25. Heat transfer by radiation mainly depends upon

26. The thermal diffusivities for solids are generally

27. Heat is closely related with

28. Thermal diffusivity of a substance is .

29. All radiations in a black body are

30. Which of the following is expected to have highest thermal conductivity

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Heat Transfer MCQ Multiple Choice Questions Answers | Quiz for Practice

About Heat Transfer MCQ Questions

Why Practice Heat Transfer Objective Questions?

Who Should Use These MCQs?

Heat Transfer MCQ Questions for Practice

1. Thermal diffusivity is

2. Which of the following has maximum value of thermal conductivity

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

4. Sensible heat is the heat required to

5. Total heat is the heat required to

6. Thermal conductivity of glass-wool varies from sample to sample because of variation in

7. When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by

8. When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

9. When heat is Transferred by molecular collision, it is referred to as heat transfer by

10. Heat transfer in liquid and gases takes place by

11. Heat flows from one body to other when they have

12. The amount of heat flow through a body by conduction is

13. Thermal diffusivity of a substance is

14. Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in

15. Pick up the wrong case. Heat flowing from one side to other depends directly on

16. Cork is a good insulator because it has

17. Which of the following has least value of conductivity

18. Moisture would find its way into insulation by vapour pressure unless it is prevented by

19. Which of the following is a case of steady state heat transfer

20. The insulation ability of an insulator with the presence of moisture would

21. Thermal conductivity of solid metals with rise in temperature normally

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

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

24. Thermal conductivity of air with rise in temperature

25. Heat transfer by radiation mainly depends upon

26. The thermal diffusivities for solids are generally

27. Heat is closely related with

28. Thermal diffusivity of a substance is .

29. All radiations in a black body are

30. Which of the following is expected to have highest thermal conductivity

Your Score

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