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Electromagnetic Field Theory

Electromagnetic Field Theory
How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m?

 2.5 mA.
 1.5 mA.
 1mA.
 2 mA.

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Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is

High standing wave ratio
Narrow bandwidth
Poor directivity
Low directional coupling

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Electromagnetic Field Theory
Electric field strength of charge

 Decrease with distance.
 Increase distance.
 Increase square distance.
 Decrease with square distance.

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Electromagnetic Field Theory
The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as

 series aiding inductance.
 mutual inductance.
 capacitance.
 self inductance.

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

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

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Electromagnetic Field Theory
When a single turn coil rotates in a uniform magnetic field at a uniform speed, the induced emf will be

 none of these.
 pulsating.
 steady.
 alternating.

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MORE MCQ ON Electromagnetic Field Theory

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