ME2251 Heat & Mass Transfer Question Bank : kings.ac.in
Name of the College : Kings College Of Engineering
Department : Mechanical Engineering
Subject : Heat & Mass Transfer
Website : kings.ac.in
Document Type : Question Bank
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/ki…20IIMECHQB.pdf
Kings Heat & Mass Transfer Question Bank
Unit – I
Conduction :
Part – A :
1. What is Fourier’s Law of heat conduction?
2. What is temperature gradient?
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3. What is coefficient of Thermal conductivity?
4. Give some examples of heat transfer in engineering.
6. Define Temperature field.
7. Define heat flux.
8. Define thermal Diffusivity.
9. What is Lap lace equation for heat flow?
10. What is Poisson’s equation for heat flow?
11. What critical radius of insulation;
12. Give examples for initial’&; boundary conditions.
13. What is a Fin?
14. Define efficiency of the fin ..
15. Define effectiveness of the fin.
16. Give examples of use of fins in various engineering applications.
17. What is meant by Transient heat conduction?
18. Give governing differential equation for the one dimensional transient heat flow.
19. What is Biot number?
20. What is Newtonian heating or cooling process?
21. Give examples for Transient heat transfer.
22. What is meant by thermal resistance?
23. What is meant by periodic heat transfer?
24. What are Heisler chart?
25. What is the function of insulating materials?
Unit – II
Convection :
Part – A :
1. What is Convective heat transfer?
2. Sketch formation of boundary layer and show laminar, transition & turbulent flow.
3. Write down differential equation for Continuity of fluid flow.
4. State Newton’s law of cooling.
5. Differentiate between Natural & Forced convection.
6. State Buckingham’s 1t’theorem.
7. What is meant by Dimensional analysis?” ,
8. Sketch boundary layer development in a circular pipe.
9. What is Reynolds analogy?
10. What is Colburn analogy?
11. Define the Bulk temperature.
12. Define velocity boundary layer thickness.
13. Define thermal boundary layer thickness.
14. Distinguish between laminar & turbulent flow.
15. What is meant by critical Reynolds number?
16. Define skin friction coefficient.
17. Give examples for free convection.
18. Define Grashof number.
19. Sketch, temperature and velocity profiles in free convection on a vertical wall.
20. Define momentum thickness.
21. Define Displacement thickness.
22. List the dimensionless numbers.
23. What are the uses of dimensional analysis?
24. Explain the term Dimensional homogeneity.
25. What are the limitations of Dimensional analysis?
Unit – III
Phase Change Heat Transfer & Heat Exchangers :
Part – A :
1. What is a Heat Exchanger1
2. How heat exchangers are classified?
3. Give examples of non mixing type heat exchangers.
4. Sketch temperature distribution graph for condensers & evaporators.
5. What is overall heat transfer coefficient in a heat exchanger?
6. What is LMTD?
7. What is effectiveness of a heat exchanger?
8. Discuss the advantage of NTU method over the LMTD method.
9. What are the assumptions made during LMTD analysis?
10. What are the factors are involved in designing a heat exchangers? . . ~;
11. , In what way Boiling & Condensation differs from other types of heat exchange?
12. What is Excess temperature in boiling?
13. What is meant by sub cooled or local boiling?
14. What is Nucleate boiling?
15. Give expression for heat transfer coefficient in Nucleate boiling.
16. What is flow boiling? .
17. What is meant by condensation?
18. Draw heat flux curve for various regions of flow boiling.
19. Define Film wise condensation.
20. Define Drop wise condensation.
21. How is the Reynolds number in condensation defined?
Unit – IV
Radiation
Part – A
1. Define Radiation heat transfer.
2. What is Stefan’s Bolts Mann law?
3. What is Intensity of radiation?
4. Define Shape factor.
5. What is Radiation Shield?
6. Define Quantum theory.
7. Define Emissive power of a black surface.
8. Defme concept of Black body.
9. Define Planck’s distribution law.
10. Define Wien’s distribution law.
11. Define Emissivity of a surface.
12. What is meant by Kirchhoff’s law?
13. Define Irradiation.
14. Define Radiosity.
15. Distinguish between Absorptivity & Transmittivity of radiation.
16. What are the gases, which radiate heat?
17. What is mean beam length in Gas Radiation?
18. What is the equation for radiation between two gray bodies?
19. Distinguish between Reflectivity & Transmittivity.
20. Differentiate Opaque body & perfectly transparent surface.
21. Write down the Wien’s formula.
22. Write down the heat transfer equation for Radiant exchange between infinite
23. parallel gray planes.
Unit – V
Mass Transfer
Part – A
1. What is meant by mass transfer?
2. What is Diffusion mass transfer?
3. What is Convective mass transfer?
4. Give some examples of Diffusion mass transfer.
5. What is the governing equation for Diffusion mass transfer?
6. What is mass diffusion velocity?
7. What is the Molar Diffusion velocity?
8. Define the following: Ii) Mass concentration b) Molar concentration )
9. What is Counter diffusion?
10. Define mass transfer fluxes.
11. What is the governing equation for Transient Diffusion?
12. Give equation for Counter diffusion.
13. Define Fourier number & Biot number for mass transfer.