Electromagnetic Field Theory If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then n = - k. n. k = 0. n = K. n × k = 0. n = - k. n. k = 0. n = K. n × k = 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Mutual inductance between two magnetically coupled coils depends on all of above. permeability of core. the number of their turns. cross sectional area of their common core. all of above. permeability of core. the number of their turns. cross sectional area of their common core. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In a lossless medium the intrinsic impedance η = 60π and μr = 1. The relative dielectric constant εr shall be 1. 4. 2. 8. 1. 4. 2. 8. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by ab Bo cosω t. Zero. Bo ω sinω t. abω Bo sinω t. ab Bo cosω t. Zero. Bo ω sinω t. abω Bo sinω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A magnetic material has a total flux B of 80 micro Wb with an mmf of 160 AT. The reluctance in ampere turn per weber is 2 × 106. 2 × 10-6. 2 × 108. 2 × 10-8. 2 × 106. 2 × 10-6. 2 × 108. 2 × 10-8. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Between a hollow and solid metal sphere, charge reside on outer surface in hollow and throughout in solid. None of above. on outer surface in both. on outer surface in hollow and throughout in solid on outer surface in hollow and throughout in solid. None of above. on outer surface in both. on outer surface in hollow and throughout in solid ANSWER DOWNLOAD EXAMIANS APP
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