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