Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? Dust particles may not accumulate None of these Rain drops may not collect Charge per unit area becomes very high for lightening to discharge Dust particles may not accumulate None of these Rain drops may not collect Charge per unit area becomes very high for lightening to discharge ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The useful magnetic flux obtainable from any closed surface is Both A and B Constant Unity None of these Both A and B Constant Unity None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory When the phase velocity of an EM wave depends on frequency in any medium the phenomenon is called Dispersion Polarisation Scattering Absorption Dispersion Polarisation Scattering Absorption ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A satellite that simply reflect back the signals from one region of the earth to the other region is known as Geostationary satellite Passive satellite Active satellite Orbiting satellite Geostationary satellite Passive satellite Active satellite Orbiting satellite ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The main disadvantage of the two-hole directional coupler is Poor directivity Narrow bandwidth High standing wave ratio Low directional coupling Poor directivity Narrow bandwidth High standing wave ratio Low directional coupling ANSWER DOWNLOAD EXAMIANS APP
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