GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-V (OLD) EXAMINATION - WINTER 2020
--- Content provided by FirstRanker.com ---
Subject Code:151002 Date:03/02/2021Subject Name:Engineering Electromagnetics
Time:10:30 AM TO 12:30 PM Total Marks:56
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
Q.1 (a) 1) Express point P(-2,6,3) in the cylindrical and spherical co-ordinate system. 04
i1) Explain Dot product and Cross product in brief. 03
(b) Define Coulomb’s law and derive the expression for electric field intensity E due to point charge. 07
--- Content provided by FirstRanker.com ---
Q.2 (a) State Gauss’s law and derive the Maxwell’s first equation. Determine Electric flux density D for spherical Gaussian surface with point charge at the center. 07
(b) Two dipoles with dipole moments -5ax nC/m and 9ax nC/m are located at points (0, 0,-2) and (0, 0, 3) respectively. Find the potential at the origin. 07
Q.3 (a) Explain Uniqueness theorem in detail. 07
(b) Derive an expression for the capacitance of spherical capacitor. 07
Q.4 (a) State and derive Biot-Savart’s Law. 07
--- Content provided by FirstRanker.com ---
(b) Explain Maxwell’s equations in Point and Integral Form. 07
Q.5 (a) Explain how plane wave moves in free space with help of the neat diagram. 07
(b) Derive magnetic boundary conditions for B and H between two magnetic mediums. 07
Q.6 (a) Derive the expression of the Poynting vector. 07
(b) Generate the expression for Continuity of current. 07
--- Content provided by FirstRanker.com ---
Q.7 (a) Derive magnetic dipole moment for the rectangular planar loop in a uniform magnetic field. 07
(b) A cylindrical capacitor has radii a= 1 cm. and b=2.5 cm. If the space between the plates is filled with an inhomogeneous dielectric with ε = (10 + ρ)/ ρ, where ρ is in centimeters, find the capacitance per meter of the capacitor. 07
Q.8 (a) Explain Faraday’s law with neat diagram. 07
(b) For a vector field A show that, the divergence of the curl of A is zero. 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---