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Electromagnetic Field Theory

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

True
False

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Electromagnetic Field Theory
In frec space E (z,t) = 103 sin(ωt - βz) uy v/m. What is the value of H (z,t)

 (103/377) sin(ωt - β z)(-uy) A/m.
  (103/377) sin(ωt - β z)(-ux) A/m.
 None of above.
 (103/377) cos(ωt - β z)(-ux) A/m.

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Electromagnetic Field Theory
The lagging of flux density behind the applied magnetising force is known as

 hysteresis.
 flux.
 permeance.
All of these

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Electromagnetic Field Theory
The tubes of force within the magnetic material are known as

 magnetic flux.
 lines of force.
 tubes of indication.
 none of them.

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Electromagnetic Field Theory
The minimum height of outer atmosphere is

400 km
150 km
100 km
200 km

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

 2 mA.
 2.5 mA.
 1mA.
 1.5 mA.

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