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Electromagnetic Field Theory

Electromagnetic Field Theory
The attenuation in waveguide above to cut off frequency

Infinite
Very low
Very high
Zero

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Electromagnetic Field Theory
The useful magnetic flux obtainable from any closed surface is

Unity
Constant
Both A and B
None of these

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Electromagnetic Field Theory
XEROX machine is working on

 peltier effect.
 magnetic effect.
 heating effect of current.
 electrostatic effect.

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Electromagnetic Field Theory
A plane wave in a homogeneous medium has E = 50 sin(108t + 2z) uy V/m. What is the direction of wave propagation

 y direction.
 z direction.
 – y direction.
 – z direction.

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Electromagnetic Field Theory
For an inductor, current is proportional to

 magnetic field.
 both (A) and (B).
 voltage across the inductor.
 none of them.

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Electromagnetic Field Theory
A potential field is given by V = 3x2 y – yz. The electric field at P(2, -1, 4) is

 12 Ix + 8 Iy + Iz V/m.
 12 Ix - 8 Iy - Iz V/m.
 12 Ix - Iz V/m.
 12 Ix - 8 Iy V/m.

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MORE MCQ ON Electromagnetic Field Theory

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