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Electromagnetic Field Theory

Electromagnetic Field Theory
Find the length of a conductor which is moving with a velocity 0.4m/s in a magnetic field of 8T, inducing an emf of 20V.

 0.5m.
 5.25m.
 6.25m.
 0.6m.

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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
The shape of B-H curve for air gap is

 straight line.
 ellipse.
 hyperbola.
 parabola.

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Electromagnetic Field Theory
The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a

None of these
Null
Figure of eight
Circle

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Electromagnetic Field Theory
A loop antenna is a commonly used for

Satellite communication
Direction finding
All of these
Radar

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Electromagnetic Field Theory
Poyniting vector has the dimensions

 Watt × metre2.
 Watt × metre.
 Watt/metre.
 Watts/metre2.

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