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Electromagnetic Field Theory

Electromagnetic Field Theory
Skin depth is proportional to

 1/√σ.
 Frequency.
 Permeability.
 √(σ).

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Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

 V × D²
 V × D
 V² / D
 V / D

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Electromagnetic Field Theory
In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to

An increase in the value of reactance
No change in the reactance value
Decrease in the value of reactance
No change in the impedance value

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Electromagnetic Field Theory
The lagging of flux density behind the applied magnetising force is known as

 flux.
 permeance.
All of these
 hysteresis.

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Electromagnetic Field Theory
The energy stored in the magnetic field at a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying an current at 10 A, is

 0.5 J.
 0.015 J.
 0.15 J.
 1.15 J.

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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying

 106 volts/sec.
 106 Amp.
 106 Amp/sec.
 106 volts.

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MORE MCQ ON Electromagnetic Field Theory

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