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Electromagnetic Field Theory

Electromagnetic Field Theory
A loop antenna is a commonly used for

Direction finding
Radar
All of these
Satellite communication

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Electromagnetic Field Theory
Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be

 5.
 20.
 10.
 50.

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Electromagnetic Field Theory
An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 O. The standing wave ratio will be

2.5
3.5
1.5
4.5

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Electromagnetic Field Theory
In a lossless medium the intrinsic impedance η = 60π and μr = 1. The relative dielectric constant εr shall be

 1.
 4.
 8.
 2.

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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

Short-circuited stub
A half wave line
A quarter wave line
Balun transformer

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Electromagnetic Field Theory
In case of surface waves the field strength at a point is directly proportional to

Antenna height
Distance of the point from the antenna
Current of the antenna
Wave frequency

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MORE MCQ ON Electromagnetic Field Theory

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