Electromagnetic Field Theory
The wave in wave guide has

Larger frequency than in the free space
Larger wavelength than in the free space
Group velocity inversely proportional to wavelength
Diminishing wavelength than in the free space

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Electromagnetic Field Theory
A wire carrying current is bent in the form of a circular loop. Then the magnetic field around each portion of the wire will be

 parallel to the plane of the wire.
 parallel to half portion and perpendicular for the other half.
 perpendicular to the circumference of the wire.
 none of above.

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Electromagnetic Field Theory
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at

 lower surface of the conductor.
 upper surface of the conductor.
 midway between the conductor and ground.
 the ground surface.

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Electromagnetic Field Theory
A rectangular waveguide is a

Hollow rectangular conducting tube through which electromagnetic waves can be propagat-ed
Hollow rectangular walled room carrying electromagnetic wave
Tube antenna to transmit and receive electromagnetic waves
Rectangular conducting wire to propagate electromagnetic waves

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