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. – uy. 0. 2 ux. – 2 ux. – uy. 0. 2 ux. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The useful magnetic flux obtainable from any closed surface is Constant None of these Unity Both A and B Constant None of these Unity Both A and B ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The heating time constant of an electrical machine gives an indication of its cooling. short time rating. overload capacity. rating. cooling. short time rating. overload capacity. rating. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following statement is correct for divergence of electric and magnetic flux densities? It is zero for the magnetic flux density. It is zero for the electric flux density. Both are zero. These are zero for static densities but non zero for time varying densities. It is zero for the magnetic flux density. It is zero for the electric flux density. Both are zero. These are zero for static densities but non zero for time varying densities. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following is the unit of inductance? Ampere turns. Webers / m. Milli- henry. Ohm. Ampere turns. Webers / m. Milli- henry. Ohm. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Biot-Savarts law states the relation between magnetic intensity and filament current only. (A), (B), and (D) are all correct. surface current only. volume current only. filament current only. (A), (B), and (D) are all correct. surface current only. volume current only. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS