B 06000EC303122002 Pages: 2

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Fifth Semester B.Tech Degree (S,FE) Examination January 2022 (2015 Scheme)

Course Code: EC303
Course Name: APPLIED ELECTROMAGNETIC THEORY
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) State and explain Gauss law. Derive the expression for electric flux density (8)

for an infinite sheet of charge.

b) State and prove boundary conditions for E and Hin accordance with (7)
Maxwell’s equation

2 a) Derive Poisson’s and Laplace equation in electrostatics. (7)

9) Inalossless medium for which n= 60൩൧൭5 1, and H = -0.1 cos (wt-z) ax + (8)

0.5 sin (wt - 2)0) A/m, calculate ‏برع‎ ಲ, and E.

3 3) Acurrent sheet, K= 10a-A/m, lies in the x=5m plane anda second sheet , (7)
K =-10a,A/m, is at x =-5 ൩. Find Hat all points.

b) State and explain Maxwell’s equations in the integral and differential forms. (8)
PART छ
Answer any two full questions, each carries 15 marks.

4 a) Given two dielectric media, the first medium is free space and the second (8)
medium has ६2 = 4 ‏مع‎ and | = po. Find the reflection coefficient for oblique
incidence at 6/ಎ 30° for (i) perpendicular polarisation and ii) parallel
polarisation.

b) Derive the expression of input impedance due to a transmission line (7)
terminated by a load .Also find the expression for SWR.

5 a) Derive Poynting vector theorem. (8)

b) A transmission line of Zo= 500 is terminated by रि.= 100 ೧. Find VSWR, Zmin (7)
and Zmax

6 a) Whatis polarisation? Explain the different types of Polarisation? (7)

b) A distortionless transmission line operating at 500MHz has Zo= 800, (8)
a=0.04Np/m,fB =1.5rad/m. Find the line parameters R,L,G and €

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