Heat and Mass Transfer Anna University Question Bank Pdf

Will you please provide here the question bank of the Heat and Mass Transfer subject of the mechanical engineering course of Anna University in PDF file .

[Kiran Chandar]

As you want I am here providing you question bank of the Heat and Mass Transfer subject of the mechanical engineering course of Anna University.

Questions :

1. Write the Poisson's equation for heat conduction.
2. What is lumped heat capacity analysis?
3. Define thermal boundary layer thickness.
4. What do you understand by free and forced convection?
5. What is effectiveness of a heat exchange?
6. Give the expression for NTU.
7. Find the temperature of the sun assuming as a black body, if the intensity of
radiation is maximum at the wave length of 0.5µ .
8. State Kirchhoff's law.
9. Define molar concentration.
10. What is mass average velocity?

PART B — (5 × 16 = 80 Marks)

11. (a) Derive the general heat conduction equation in cylindrical coordinates.
(Marks 16)
Or
(b) Derive the general heat conduction equation for a hollow cylinder. (Marks 16)

12. (a) Air at 20°C at 3m/s flows over a thin plate of 2m long and 1m wide.
Estimate the boundary layer thickness at the trailing edge, total drag
force, mass flow of air between x =30cm and x =80cm. Take 6 ? = 15 ×10
and 3 ? =1.17kg/m . (Marks 16)
Or
(b) Calculate the convective heat transfer from a radiator 0.5m wide and 1m
high at 84°C in a room at 20°C. Treat the radiator as a vertical plate. (Marks 16)

13. (a) Dry steam at 2.45 bar condenses on a vertical tube of height of 1m at
117°C. Estimate the thickness of the condensate film and the local heat
transfer coefficient at a distance 0.2 m from the upper end of the plate.
(Marks 16)
Or
(b) Derive the LMTD for a parallel flow heat exchanger stating the
assumptions. (Marks 16)

14. (a) Derive the radiation exchange between
(i) Large parallel gray surfaces and
(ii) Small gray bodies. (Marks 16)
Or
(b) Two large parallel plates of 1m×1m spaced 0.5m apart in a very large
room whose walls are at 27°C. The plates are at 900°C and 400°C with
emissivities 0.2 and 0.5 respectively. Find the net heat transfer to each
plate and to the room. (Marks 16)

15. (a) The temperature recorded by a thermometer whose bulb covered by a wet
wick in dry air at atmospheric pressure is 22°C. Estimate the true air
temperature. (Marks 16)
Or
(b) Dry air at 27°C and 1 bar flows over a wet plate of 50cm at 50m/s.
Calculate the mass transfer coefficient of water vapor in air at the end
of the plate. (Marks 16)

Hii Buddy ,Here I am searching for Previous year Mechanical Engineering Course Heat and Mass Transfer Subject Question Bank of Anna University , Will you please providing for same ?

[Raman Vij]

As your demand , here I am providing Question Bank of the Heat and Mass Transfer subject of the Mechanical Engineering Course of Anna University , have a Look :

1. What are the two m ecu i.i ms o~ heat conduction in solids?

2. Wh at is t hi p urpose of attaching fins to a surface? What are the different
typ I s of fin profiles?

3. In what medium is the lumped system analysis is more likely to be
applicable? An aluminum or wood? Why?

4. List the parameters that influence the heat transfer coefficient.

5. Physically, what does the Grashof number represent and how does it differ
from Reynolds number?

6. How does boiling differ from evaporation?

7. What are the different types of fouling in heat exchangers?

8. What is total hemispherical emissivity?

9. What are radiation shields?

10. What is the physical meaning of Lewis number?

For Complete Mechanical Engineering Course Heat and Mass Transfer Subject Question Bank of Anna University , Here I am, attaching pdf file

Anna University Mechanical Engineering Course Heat and Mass Transfer Subject Question Bank