SRM University 2008 B.Tech Electrical and Electronics Engineering ELECTROMAGNETIC THEORY - Question Paper

B.Tech(PT) DEGREE EXAMINATION,DECEMBER 2008
2nd Semester
PEE205-ELECTROMAGNETIC THEORY
Time:3 Hours Max.marks:100
ans ALL ques.
PART-A(10*2=20 Marks)


1.State Gauss’s legal regulations.

2.State Divergence Theorem.

3.Difine capacitence.

4.What is meant by method of images?

5.State Ampere’s circuital legal regulations.

6.Define:Magnetic flux and flux density.

7.Define mutual inductance.

8.List the different kinds of magnetic materials.

9.Define:Gauss’s legal regulations for magnetic field.

10.Write down the Maxwell’s equations for steady fields in integral form.

PART-B(5*16 = 80Marks)
11.a.Derive an Expression for electric field intensity due to a circular disc charge.

(OR)
B.A uniform line charge with ?l =4µc/m lines on the z-axis and a concentric circular cylinder of radius 1m has a surface charge density ?s = 4/3p µc/m².Both the
distributions are infinite in extent along z-axis .Find E and D in all regions .Assume Gaussian cylindrical radius as 2m.

12.a. Derive an expression for the boundary conditions ranging from 2 various dielectric
Mediums.
(OR)
b. Derive an expression for the capacitance of 2 wire transmission line.

13.a.Derive an expression for the magnetic field intensity due to a circuller current loop.
(OR)
b.Derive an expression for the magnetic field intensity due to a hollow conductor using
Ampere’s legal regulations.

14.a.Derive an expression for the boundary conditions ranging from 2 magnetic mediums.
(OR)
b.i.Explain the Lorenz force formula.
ii.Explain scalar and vector magnetic potential.

15.a.Explain the Maxwell’s equations for the time varying field in point form and integral
Form.
(OR)
b.Define :pointing theorem and discuss the identical.


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Earning:   Approval pending.