Other Bachelor Degree- TRANSPORT PROCESSES IN FOOD ENGINEERING (Karunya University, Coimbatore-2010)
Saturday, 24 August 2013 04:49anudouglas
Karunya University
(Karunya Institute of Technology and Sciences)
(Declared as Deemed to be University under Sec.3 of the UGC Act, 1956)
End Semester Examination – November/December 2010
Subject Title: TRANSPORT PROCESSES IN FOOD ENGINEERING Time: 3 hours
Subject Code: 09FP304 Maximum Marks: 100
Answer ALL questions (5 x 20 = 100 Marks)
1. Compulsory:
Discuss about mass transfer between phases. Estimate mass transfer coefficients in packed towers.
2. Derive an equation of motion for Newtonian fluids with constant density and viscosity.
(OR)
3. Discuss dimensional analysis in momentum transfer.
4. Explain unsteady heat conduction in slab and boundary conditions for numerical method for slab.
(OR)
5. A slab of material 1.00 m thick is at uniform temperature of 100oC. The front surface is suddenly exposed to a constant environment temperature of 0oC. The convective resistance is zero. (h=infinity). The black surface of the slab is insulated. The thermal diffusivity α = 2.00 x10-5 m2/s. Using five slices each 0.2m thick and Schmidt numerical method with M=2.0 calculate the temperature profile at t=6000s. Use the special procedure for first time increment.
6. Derive (i) basic equation for unsteady state mass transfer (ii) diffusion in a flat pale with negligible surface resistance.
(OR)
7. Discuss dimensional analysis for convective mass transfer.
8. Explain combined convection, radiation and conduction heat transfer in constant rate period.
(OR)
9. Discuss freeze drying of biological materials.
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