Electromagnetic Field Theory The main disadvantage of the two-hole directional coupler is Low directional coupling Poor directivity Narrow bandwidth High standing wave ratio Low directional coupling Poor directivity Narrow bandwidth High standing wave ratio ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then transformer is an ideal transformer. turns ratio of the transformer is also two. none of these. it is a perfect transformer. transformer is an ideal transformer. turns ratio of the transformer is also two. none of these. it is a perfect transformer. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The radiation pattern of loop antenna is Semicircle Elliptical Cardoid or Limacon Circle Semicircle Elliptical Cardoid or Limacon Circle ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The divergence of a vector is a scalar, while the curl of a vector is another Vector Scalar None of these Unit vector Vector Scalar None of these Unit vector 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 Dispersion Polarisation Absorption Scattering Dispersion Polarisation Absorption ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere QR/(4π εo r3). Q/(4 π εo r3). 3 Qr/(4 π εo R3). Qr/(4 π εo R3). QR/(4π εo r3). Q/(4 π εo r3). 3 Qr/(4 π εo R3). Qr/(4 π εo R3). ANSWER DOWNLOAD EXAMIANS APP
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