Electromagnetic Field Theory Materials subjected to rapid reversals of magnetism should have low hysteresis loss. high permeability. low permeability. both a and b. low hysteresis loss. high permeability. low permeability. both a and b. 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 abω Bo sinω t. Bo ω sinω t. Zero. ab Bo cosω t. abω Bo sinω t. Bo ω sinω t. Zero. ab Bo cosω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An electric field on a place described by its potential V = 20 (r -1 + r-2) where r is the distance from the source. The field is due to A quardra pole. A monopole. Both of A and B. A dipole. A quardra pole. A monopole. Both of A and B. A dipole. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0. No Yes No Yes ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An infinite non conducting sheet of charge has σ of 10-7 c/m3. Equipotential surface for a potential of 10 volts is. 1.77 mm. 1.32 mm. 0.88 mm. 0. 1.77 mm. 1.32 mm. 0.88 mm. 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In case of surface waves the field strength at a point is directly proportional to Wave frequency Current of the antenna Antenna height Distance of the point from the antenna Wave frequency Current of the antenna Antenna height Distance of the point from the antenna ANSWER DOWNLOAD EXAMIANS APP
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