GATE EE : Electromagnetic fields Champion Quiz 4 for ESE & GATE EE Exams

Question 1

The three limbed non ideal core shown in the figure has three windings with nominal inductances L each when measured individually with a single phase AC source. The inductance of the windings as connected will be

Question 2

Two infinite strips of width w m in x direction as shown in Fig., are carrying forward and return currents of +I and –I in the z direction. The strips are separated by a distance of xm. The inductance per unit length of the configuration is measured to be L H/m. If the distance of separation between the strips is now reduced to

the inductance per unit length of the configuration is

Question 3

Two conductors are carrying forward and return current of +I and –I as shown in Fig. The magnetic field intensity

at point P is

Question 4

What will be the current in the circular coil of radius 15 cm having magnetic field strength of 2,000 A/m, if the coil is wound with 250 turns.

Question 5

In a pure resistor, the rms voltage is 120 V, current is 10 A and frequency is 60 Hz. What will be the Peak voltage and current?

Question 6

Two identical coils each having inductance L are placed together on the same core. If an overall inductance of αL is obtained by interconnecting these coils, the minimum value of α is ____________.

Question 7

A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300mm and a cross-sectional area of 300 mm². The inductance of the coil corresponding to a magnetizing current of 3A will be (Given that μ0 = 4π × 10^–7 H/m)

Question 8

A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300mm and a cross-sectional area of 300 mm². The inductance of the coil corresponding to a magnetizing current of 3A will be (Given that μ₀ = 4π × 10^–7 H/m)

Question 9

Two magnetically uncoupled inductive coils have Q factors q₁ and q₂ at the chosen operating frequency. Their respective resistances are R₁ and R₂. When connected in series, their effective Q factor at the same operating frequency is

Question 10

In the circuit shown in the following figure, the switch is closed at time t = 0. The steady state value of the voltage V_c is
$Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-EE-ME-19-Mar\GATE-EE-2002_files\image161.jpg$