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Electromagnetic Field Theory

Electromagnetic Field Theory
Materials subjected to rapid reversals of magnetism should have

 low permeability.
 low hysteresis loss.
 high permeability.
 both a and b.

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be

 37.68 μH.
 1.1304 μH.
  113.04 μH.
 3.768 μH.

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Electromagnetic Field Theory
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of

 flux density.
 cross-sectional area of conductor.
 length of conductor.
 current flowing through the conductor.

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Electromagnetic Field Theory
An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 O. The standing wave ratio will be

2.5
3.5
1.5
4.5

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Electromagnetic Field Theory
A conductor of length L has current I passing through it, when it is placed parallel to strong magnetic field. The force experienced by the conductor will be

 zero.
 BIL.
 BL2I.
 BI2L.

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Electromagnetic Field Theory
A square corner reflector is used in

Radio astronomy
Tv broadcast
Point to point communication
All of these

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MORE MCQ ON Electromagnetic Field Theory

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