Electromagnetic Field Theory An electric dipole of moment P is placed in front of a ground sphere. The change induced on the surface of the sphere is (Assume radius of sphere = R and distance from dipole to centre of sphere = d) PR/d2. PR/d. Zero. PR 2/d3. PR/d2. PR/d. Zero. PR 2/d3. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Gradient of scalar field is expressed as Outward flux of a vector field per unit volume as the volume about the point tends to zero. Gradient of divergence of a vector field minus the curl of the vector field. Circulation of a vector field per unit area as the area tends to zero. Maximum rate of increase of scalar function at a point. Outward flux of a vector field per unit volume as the volume about the point tends to zero. Gradient of divergence of a vector field minus the curl of the vector field. Circulation of a vector field per unit area as the area tends to zero. Maximum rate of increase of scalar function at a point. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Conductor is constant and field is varying then emf will be induced. This principle is called None of these static induced emf. dynamically induced emf. virtually induced emf. None of these static induced emf. dynamically induced emf. virtually induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The current of 3 A will be 37.68 mH. 113.04 mH. 37.68 µH. 113.04 µH. 37.68 mH. 113.04 mH. 37.68 µH. 113.04 µH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following statement is correct for divergence of electric and magnetic flux densities? 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. It is zero for the magnetic flux density. It is zero for the electric flux density. Both are zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two straight parallel conductors carry equal currents in opposite direction. The force between them is zero. none of above. attractive. repulsive. zero. none of above. attractive. repulsive. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS