Download GTU BE/B.Tech 2019 Winter 6th Sem Old 160906 Theory Of Electromagnetics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem Old 160906 Theory Of Electromagnetics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VI (Old) EXAMINATION ? WINTER 2019
Subject Code: 160906 Date: 09/12/2019

Subject Name: Theory of Electromagnetics

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Explain dot product and cross product of two vectors. If the vector field G=y ax-
2.5x ay+3az and the point Q (4, 5 ,2 ),find the vector component of G at Q in the
direction of an= 1/3 ( 2ax+ ay- az ).
07
(b) Find ? ? ?? ? and ? ? ?? ? at ?? (2,?1,3), if ?? ? = 2?? ?? ?? ?? + ?? ?? ?? + ?? ?? 2
?? ?? . 07

Q.2 (a) State Coulomb?s law of electric for various type of charge distribution 07
(b) Define divergence and its physical significance. 07
OR
(b) Explain boundary condition for dielectric material. 07

Q.3 (a) State and explain Biot-Savart?s law for static magnetic fields as applied to
different types of current distribution
07
(b) Derive the expression of Electric field intensity (E) due to infinite uniform sheet
charge distribution in free space.
07
OR
Q.3 (a) Derive the equation of Electric field intensity (E) due to infinite long line charge
located on the Z axis.
07
(b) A current element I ?L = 2? (0.6 ax-0.8ay) ? A is situated at a point (4, -2,3). Find
the incremental field ?H at a point (1,3,2).
07

Q.4 (a) Explain Ampere?s circuital law. 07
(b) Derive the expression curl H = J. 07
OR
Q.4 (a) State and explain Stokes theorem. 07
(b) State and Explain Lorentz force equation on charge particle and explain the
concept of magnetic torque
07

Q.5 (a) Derive Poisson?s and Laplace?s equation 07
(b) Explain concept of potential gradient and prove that E = - ? V 07
OR
Q.5 (a) States explain Gauss?s law. Obtain electric field intensity of line charge using
Gauss?s law
07
(b) Write Maxwell equation in point form and in integral form. 07






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