Electromagnetic Field Theory Between a hollow and solid metal sphere, charge reside on outer surface in both. on outer surface in hollow and throughout in solid None of above. on outer surface in hollow and throughout in solid. on outer surface in both. on outer surface in hollow and throughout in solid None of above. on outer surface in hollow and throughout in solid. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetostriction is a phenomenon of change in permeability of ferromagnetic materials during magnetism. generation of electricity in ferromagnetic materials. change in physical dimensions of ferromagnetic materials during magnetism. generation of magnetism in electrical conductors. change in permeability of ferromagnetic materials during magnetism. generation of electricity in ferromagnetic materials. change in physical dimensions of ferromagnetic materials during magnetism. generation of magnetism in electrical conductors. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Gradient of scalar field is expressed as Gradient of divergence of a vector field minus the curl of the vector field. Outward flux of a vector field per unit volume as the volume about the point tends to zero. Circulation of a vector field per unit area as the area tends to zero. Maximum rate of increase of scalar function at a point. Gradient of divergence of a vector field minus the curl of the vector field. Outward flux of a vector field per unit volume as the volume about the point tends to zero. 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 The critical frequency of ‘F’ layer is greater than 30 MHz. False True False True ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two identical circular coils, one closed and another is little split (not enclosed) are placed in an uniform magnetic field which decrease at a constant rate. If the plane to the coils are perpendicular to the field which of the following statements is true? Equal joule heating occurs in both coils. An emf is induced in split coil. Joule heating does not occur in each of the coils. An emf is induced in both coils. Equal joule heating occurs in both coils. An emf is induced in split coil. Joule heating does not occur in each of the coils. An emf is induced in both coils. 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
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