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Electromagnetic Field Theory

Electromagnetic Field Theory
A square corner reflector is used in

All of these
Point to point communication
Tv broadcast
Radio astronomy

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Electromagnetic Field Theory
Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is

 0.477.
 0.01.
 0.577.
 0.447.

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Electromagnetic Field Theory
The potential that appears at a point in space due to the current which caused it is called potential

Lagging the current
Retardation
Oscillating
Accelerating

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Electromagnetic Field Theory
In above question no. 9, the average force on the core to reduce the air gap will be

 832.29 N.
 3332.47 N.
 6664.8 N.
 1666.22 N.

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Electromagnetic Field Theory
Which of the following is zero in relation to electromagnetic fields?

 Grad div A.
 Div grad V.
 Div curl A.
 Curl curl A.

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Electromagnetic Field Theory
When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon

The value of current
The weight of the conductor
The direction of the conductor
None of these

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MORE MCQ ON Electromagnetic Field Theory

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