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Electromagnetic Field Theory

Electromagnetic Field Theory
A square corner reflector is used in

Tv broadcast
All of these
Radio astronomy
Point to point communication

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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 | E |.
 Zero.
 E.
 Null vector.

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Electromagnetic Field Theory
In order to minimize loss due to hysteresis the magnetic material should have

 high hysteresis coefficient.
 high resistivity.
 large coercivity.
 small B-H loop area.

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Electromagnetic Field Theory
Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will

 remain in stable equilibrium.
 will move out of the field of influence of two charges.
 be in unstable equilibrium.
 not be equilibrium.

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Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?

 either 1 or 2
None of these
 0
 maximum

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Electromagnetic Field Theory
The principle of dynamically induced emf is utilized in a

 transformer.
 thermocouple.
 choke.
 generator.

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MORE MCQ ON Electromagnetic Field Theory

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