Champion Test EE: Electromagnetic Theory for ESE & GATE EE Exams

Question 1

If

is the electric field intensity,

is equal to

Question 2

Consider a one-turn rectangular loop of wire placed in a uniform magnetic field as shown in the figure. The plane of the loop is perpendicular to the field lines. The resistance of the loop is 0.4Ω, and its inductance is negligible. The magnetic flux density (in Tesla) is a function of time and is given by B(t) = 0.25 sin ωt, where ω= 2π × 50 radian/second. The power absorbed (in watt) by the loop from the magnetic field is ______.

Question 3

The following equation is not valid for magnetostatic field in homogenous magnetic materials:

Question 4

Which of the following is not a Maxwell's Equations?

Question 5

In free space, if

, the poisson’s equation becomes

Question 6

for the given vector if x,y & z are not equal to zero, what is the value of k if the given field represented by A is sinousoidal ______.

Question 7

Equation

is based on

Question 8

Image theory is applicable to problems involving

Question 9

Which one of the following is not the valid expression for magnetostatic field vector

?

Question 10

Which of the following is zero as applied to electromagnetic fields?

Question 11

What is the force on a unit charge moving with velocity

in presence of electric field

and magnetic field

?

Question 12

An inductor of 0.3125 H, is in steady state condition & carries a current of 2.28 Amp in their circuitry, then how much amount of Magnetic Energy stored in the inductor

Question 13

How much current must flow in a loop radius 1 m to produce a magnetic field 1 mAm^–1?

Question 14

What is the magnetic field due to an infinite linear current carrying conductor ?

Question 15

The conductors of a 10 km long, single phase, two wire line are separated by a distance of 1.5m. The diameter of each conductor is 1 cm. If the conductors are of copper, the inductance of the circuit is

Question 16

Sphere of radius a with a uniform charge density

shall have electric flux density at r = a, equal to

Question 17

The maximum space rate of change of the function which is in increasing direction of the function is known as

Question 18

A phasor
1) May be a scalar or a vector
2) Is a time-dependent quantity
3) Is a complex quantity
Which of the above statements are correct?

Question 19

Maxwell equations
1) are extension of the works of Gauss, Faraday and Ampere
2) Help studying the application of electrostatic fields only
3) can be written in integral form and point form
4) need not be modified depending upon the media involved in the problem
Which of the above statements are correct?

Question 20

In a circular loop of wire of radius R with current I, what will be the magnetic induction B on the axis of the loop at a distance z from the center of the loop?