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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 zero.
 none of above.
 repulsive.
 attractive.

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Electromagnetic Field Theory
The frequency range for satellite communication is

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

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Electromagnetic Field Theory
Conductor is constant and field is varying then emf will be induced. This principle is called

 static induced emf.
None of these
 dynamically induced emf.
 virtually induced emf.

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Electromagnetic Field Theory
Tropospheric scatter propagation is not subject to any fading.

False
True

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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
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as

 A = cosφ Ir - sinφ Ir.
 A = cosφ Ir + sinφ Iφ.
 A = cosφ Ir.
 A = sinφ Ir.

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MORE MCQ ON Electromagnetic Field Theory

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