Cochin University of Science and Techology (CUST) 2006 B.Tech Electronics and Communications Engineering ELECTROMAGNETIC THEORY - Question Paper

ELECTROMAGNETIC THEORY (NOVEMBER 2006)

1a. discuss the transformation from Cartesian to Cylindrical coordinate system
b. discuss the term divergence. State and prove divergence theorem
2a. discuss Coulomb's legal regulations and Gauss's legal regulations
b. Derive the expression for energy stored in a capacitor
3a. State and discuss Biot-Sawart legal regulations
b. A wire carrying a current of 100A is bent into a square of side 10cm. compute the field at the centre of the coil
4a. State and discuss Ampere's Circuital legal regulations
b. Derive the expression for the 'inductance of a co-axial cable
5a. State and discuss Faraday's Laws of Electromagnetic induction
b. discuss displaement current and eddy current
c. Differentiate ranging from self and mutual inductances
6a. discuss the Maxwells equations in integral and point forms
b. discuss the subsequent terms:
i) Phase velocity and group velocity
ii) Skin depth
7a. State and discuss Poynting Theorem
b. discuss :
i) Snell's legal regulations ii) Brewster angle iii) Wave impedance
8a. Derive the expression for reflection coefficient and transmission coefficient for a normally incident wave having parallel polarization
b. discuss Evanescent wave concept
9a. Derive transmission line equations
b. What is standing wave? describe standing wave ratio. What is its relationship with reflection coefficient?
10a.Explain the subsequent for a rectangular wave guide:
i) Cut off wave length ii) Dominant mode
b. discuss :
i) Stub matching
ii) Quarter wave length and half wave length transformer matching

Earning:   Approval pending.