Electromagnetic Field Theory Materials subjected to rapid reversals of magnetism should have low permeability. high permeability. both a and b. low hysteresis loss. low permeability. high permeability. both a and b. low hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two spheres of radius r1 and r2 are connected by a conducting wire. Each of the spheres has been given a charge Q. Now both of sphere will have same potential. smaller sphere will have zero potential. larger sphere will have greater potential. larger sphere will have smalled potential. both of sphere will have same potential. smaller sphere will have zero potential. larger sphere will have greater potential. larger sphere will have smalled potential. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity equal to that of disc and in the opposite direction. less than that of disc but in opposite direction. equal to that of disc and in the same direction. less than that of disc and in the same direction. equal to that of disc and in the opposite direction. less than that of disc but in opposite direction. equal to that of disc and in the same direction. less than that of disc and in the same direction. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is 0.01. 0.577. 0.447. 0.477. 0.01. 0.577. 0.447. 0.477. 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. Yes No Yes No ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A magnetic vector potential is given by the expression A = (- cos x) (cos y) uz. The flux density at the origin is 2 ux. 0. – 2 ux. – uy. 2 ux. 0. – 2 ux. – uy. ANSWER DOWNLOAD EXAMIANS APP
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