Electromagnetic Field Theory
It was suggested by _____________ that the electric field should be imagined to be divided into tubes of force containing a fixed number of line of force

 Kelvin.
 Faraday.
 all of above.
 Newton.

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Electromagnetic Field Theory
In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include

Polarization shifting and code diversity
Path diversity and frequency diversity
Antenna replacement and feed correction
Amplitude timing and phase correction

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Electromagnetic Field Theory
The effective reactance of an inductive coil

 remains same irrespective of the frequency.
 none of these.
 decreases because of stray capacitance as the frequency increases.
 increases because of stray capacitance as the frequency increases.

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