Download GTU BE/B.Tech 2018 Winter 8th Sem New 2180507 Transport Phenomena Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem New 2180507 Transport Phenomena Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2180507 Date: 15/11/2018

Subject Name: Transport Phenomena

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Explain the physical quantities encountered in transport phenomena. 03
(b) State and explain Conservation Laws. 04
(c) Discuss the Transport Phenomena at three different levels. 07

Q.2 (a) Explain in brief Newton?s Law of Viscosity. 03
(b) Discuss the general trends of viscosity with temperature and pressure for
ordinary fluids.
04
(c) Derive the equation for the temperature distribution in two concentric
cylinders.
07
OR
(c) Explain operation of a couette viscometer. 07
Q.3 (a) Discuss in brief Molecular Energy Transport. 03
(b) Discuss the commonly used boundary conditions of shell momentum
balance.
04
(c) Derive equation of momentum flux and velocity distribution for the
upward flow in a cylindrical annulus.
07
OR
Q.3 (a) Discuss the Reynolds number for falling films. 03
(b) What is shell momentum balance? Explain the procedure for setting up
and solving viscous flow problems.
04
(c) Derive the equation of motion. 07
Q.4 (a) Define mass and molar concentration. 03
(b) Discuss about shell energy balance and boundary conditions. 04
(c) Find the radial temperature distribution within the wire for heat
conduction with an electrical source.
07
OR
Q.4 (a) Discuss mass average and molar average velocity. 03
(b) Discuss about binary diffusion and self diffusion. 04
(c) Derive the differential equation showing the relation between temperature
and the length of reactor stating the various boundary conditions for heat
conduction with a chemical heat source.
07
Q.5 (a) Discuss about shell mass balance. 03
(b) Compare convective and molecular molar fluxes. 04
(c) Discuss theory of diffusion in gases at low density. 07
OR

Q.5 (a) Explain Molecular Mass Transport. 03
(b) Explain temperature and pressure dependence of diffusivities. 04
(c) Derive equation of molar flux for steady state diffusion of A through non-
diffusing B.
07

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