Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? Rain drops may not collect Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge None of these Rain drops may not collect Dust particles may not accumulate Charge per unit area becomes very high for lightening to discharge None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The useful magnetic flux obtainable from any closed surface is Constant Both A and B Unity None of these Constant Both A and B 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 Scattering Absorption Dispersion Polarisation Scattering Absorption Dispersion Polarisation 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 Active satellite Orbiting satellite Geostationary satellite Passive satellite Active satellite Orbiting satellite Geostationary satellite Passive satellite ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The main disadvantage of the two-hole directional coupler is Low directional coupling Narrow bandwidth High standing wave ratio Poor directivity Low directional coupling Narrow bandwidth High standing wave ratio Poor directivity ANSWER DOWNLOAD EXAMIANS APP
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