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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

30000 to 300000 MHz
3 to 30 kHz
3000 to 30000 MHz
300 to 3000 kHz

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Electromagnetic Field Theory
Which of the following will increase the antenna radiation efficiency?

Use of larger section of conductor
Top loading of antenna
Providing insulation on conductor
Any of the above

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Electromagnetic Field Theory
MUF is depend upon

11 year sun spot cycle
Received frequency by receiver
Electron density of the ionospheric layer
Height of ionospheric layer

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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that

 the inductor is made of thin wire.
 the inductor has ferrite core.
 the inductor is non linear.
 the above statement is false.

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Electromagnetic Field Theory
The useful magnetic flux obtainable from any closed surface is

Both A and B
None of these
Unity
Constant

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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Orbiting satellite
Active satellite
Passive satellite
Geostationary satellite

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MORE MCQ ON Electromagnetic Field Theory

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