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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 E.
 Zero.
 | E |.
 Null vector.

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Electromagnetic Field Theory
XEROX machine is working on

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

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Electromagnetic Field Theory
Biot-Savarts law states the relation between magnetic intensity and

 surface current only.
 (A), (B), and (D) are all correct.
 volume current only.
 filament current only.

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Electromagnetic Field Theory
The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then

 turns ratio of the transformer is also two.
 none of these.
 transformer is an ideal transformer.
 it is a perfect transformer.

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Electromagnetic Field Theory
An inductor designed with 400 turns coil wound on an iron core of 16 cm2 cross sectional area and with a cut of air gap length of 1 mm. The coil is connected to a 230 V, 50 Hz supply. Neglected coil resistance, core loss, iron reluctance and leakage inductance. Find the current in the inductor.

 9.04 A.
 18.08 A.
 2.28 A.
 4.56 A.

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MORE MCQ ON Electromagnetic Field Theory

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