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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of following can induce the maximum induced voltage ?

 20 amp dc.
 1 amp 100 Hz.
 1 amp dc.
 1 amp 1 Hz.

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

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

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Electromagnetic Field Theory
What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it?

 Depends on strength of current element.
 Infinity.
 Unity.
 Zero.

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Electromagnetic Field Theory
The main purpose of choke is

  to pass low frequencies.
 none of above.
 to pass high frequencies.
 to block low frequencies.

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Electromagnetic Field Theory
A waveguide operated below cut off frequency can be used as

Phase shifter
An attenuator
An isolator
None

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

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MORE MCQ ON Electromagnetic Field Theory

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