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Electromagnetic Field Theory

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

Very high
Infinite
Very low
Zero

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Electromagnetic Field Theory
The magnetic field at any point on the axis of current carrying circular coil will be

 zero.
 parallel to axis.
 at an angle 45o with the axis.
 perpendicular to axis.

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Electromagnetic Field Theory
The radiation pattern of loop antenna is

Semicircle
Elliptical
Cardoid or Limacon
Circle

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Electromagnetic Field Theory
The electrical field strength at a distance point A due to a point charge +q, located at the origin, is 100 µl v/m. If the point charge is now enclosed by a perfectly conducting metal sheet sphere whose centre is at origin, A, outside the sphere, becomes

 100 μ v/m.
 None of above.
 - 100 μ v/m.
 0.

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Electromagnetic Field Theory
Which of following is not a unit of flux?

 Maxwell.
 All of above.
 Weber.
 Telsa.

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Electromagnetic Field Theory
A circular ring is carrying uniformly distributed charge q and a point charge – Q on the axis of the ring. The magnitude of dipole moment of the charge system is (Assume distance between centre of ring and point charge is d and radius of ring R)

 Q√(R2 + d2).
  QD.
 QR.
 QR2/d.

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MORE MCQ ON Electromagnetic Field Theory

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