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Electromagnetic Field Theory

Electromagnetic Field Theory
If a and b are the dimensions of waveguide then

a = b/4
a = b
a = 2b
a = 3b

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Electromagnetic Field Theory
Electric field intensity (E) at ant point in an electric field is equal to

 (potential gradient)2.
 (potential gradient)1/3.
 (potential gradient)1/2.
 potential gradient.

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Electromagnetic Field Theory
A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is

 5 N.
 3.75 N.
 2 N.
 2.5 N.

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Electromagnetic Field Theory
RF inductor are characterized by

 high current rating and high resistance.
 low current rating and low resistance.
 high current rating and low resistance.
 low current rating and high resistance.

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Electromagnetic Field Theory
________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field.

 Magnetic flux density.
 Electric intensity.
 Electric flux.
None of these

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Electromagnetic Field Theory
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is

 20 W.
  25 W.
 50 W.
 15 W.

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MORE MCQ ON Electromagnetic Field Theory

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