Electromagnetic Field Theory Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike? 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 Rain drops may not collect Dust particles may not accumulate 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 Unity None of these Constant Both A and B Unity None of these Constant Both A and B 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 Absorption Polarisation Dispersion Scattering Absorption Polarisation Dispersion Scattering 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 Orbiting satellite Active satellite Geostationary satellite Passive satellite Orbiting satellite Active satellite ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The main disadvantage of the two-hole directional coupler is Poor directivity High standing wave ratio Low directional coupling Narrow bandwidth Poor directivity High standing wave ratio Low directional coupling Narrow bandwidth ANSWER DOWNLOAD EXAMIANS APP
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