Electromagnetic Field Theory A medium is said to be isotropic when ∈ is zero. ∈ = μσ. ∈ is a scalar constant. ∈ = μ. ∈ is zero. ∈ = μσ. ∈ is a scalar constant. ∈ = μ. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A magnetic circuit requires 800 AT to produce a certain quantity of flux in a magnetic circuit. If its excitation coil has 100 turns and 5 Ohm resistance, the voltage to be applied in exciting coil is 80 V. 60 V. 40 V. 8 V. 80 V. 60 V. 40 V. 8 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetostriction is a phenomenon of generation of electricity in ferromagnetic materials. change in permeability of ferromagnetic materials during magnetism. generation of magnetism in electrical conductors. change in physical dimensions of ferromagnetic materials during magnetism. generation of electricity in ferromagnetic materials. change in permeability of ferromagnetic materials during magnetism. generation of magnetism in electrical conductors. change in physical dimensions of ferromagnetic materials during magnetism. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory ________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field. Magnetic flux density. Electric intensity. Electric flux. None of these Magnetic flux density. Electric intensity. Electric flux. None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Gradient of scalar field is expressed as Circulation of a vector field per unit area as the area tends to zero. 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. Maximum rate of increase of scalar function at a point. Circulation of a vector field per unit area as the area tends to zero. 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. Maximum rate of increase of scalar function at a point. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that the inductor is non linear. the above statement is false. the inductor is made of thin wire. the inductor has ferrite core. the inductor is non linear. the above statement is false. the inductor is made of thin wire. the inductor has ferrite core. ANSWER DOWNLOAD EXAMIANS APP
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