Electromagnetic Field Theory What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it? Zero. Depends on strength of current element. Unity. Infinity. Zero. Depends on strength of current element. Unity. Infinity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetic circuit with cross sectional area of 20 cm2 is to be operated at 50 Hz from 120 Vrms supply. The number of turns required to active a peak magnetic flux density of 1.8 T in the core flux is 600. 300. 450. 150. 600. 300. 450. 150. ANSWER DOWNLOAD EXAMIANS APP
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/d. PR 2/d3. PR/d2. Zero. PR/d. PR 2/d3. PR/d2. Zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In order to minimize loss due to hysteresis the magnetic material should have high hysteresis coefficient. high resistivity. small B-H loop area. large coercivity. high hysteresis coefficient. high resistivity. small B-H loop area. large coercivity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A dipole having a moment p – 3ux - 5uy + 10uz ncm is located at p(1,2,-4) in free space. The V as Q(2,3,4) is 2.52 V. 2.62 V. 1.31 V. 1.26 V. 2.52 V. 2.62 V. 1.31 V. 1.26 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as A = cosφ Ir. A = cosφ Ir + sinφ Iφ. A = cosφ Ir - sinφ Ir. A = sinφ Ir. A = cosφ Ir. A = cosφ Ir + sinφ Iφ. A = cosφ Ir - sinφ Ir. A = sinφ Ir. ANSWER DOWNLOAD EXAMIANS APP
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