B E1133 Pages: 2
Reg No.:_ Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIFTH SEMESTER B.TECH DEGREE EXAMINATION(S), MAY 2019
Course Code: EC303
Course Name: APPLIED ELECTROMAGNETIC THEORY
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. ver
1 a) State Ampere’s circuit law. (3)
b) Derive an expression for magnetic energy of a continuous distribution of current in (7)
a volume.
c) Find the potential function and electric field intensity for the region between (5)
concentric right circular cylinders, where V=0 at r=lmm and V=100 V at r=30mm.
2 a) State and derive Gauss’s law in point form. (7)
0) A square loop of 4m side is placed in xy-plane with its centre at the origin and (8)
sides long the coordinates axes. If the magnetic flux density in the region is given
8 = (0.28a, - 0.3a, + 0.4a,)e~°"* Wb/m?. Find the induced EMF in the loop at t=10
5
3 ஐ List all Maxwell’s equations in integral form (4)
b) Derive the solution of uniform plane wave in lossy dielectric medium. (6)
©) An air filled parallel plate capacitor is with following specification, area= 2 m? and (5)
spacing between the plates=0.1m. If a voltage V = 20८05 103८ is applied across the
capacitor plates, find the magnetic field between the capacitor plates.
PART 13
Answer any two full questions, each carries 15 marks.
4 a) What is Snell’s law? (3)
b) Derive an expression for reflection coefficient of a plane wave under oblique (5)
incidence with parallel polarization at a dielectric interface.
c) Define reflection coefficient and VSWR of a transmission line and derive the (7)

relation between reflection coefficient and VSWR.

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