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 inductance of the coil corresponding to a magnetizing current of 6 A will be 37.68 μH. 113.04 μH. 3.768 μH. 1.1304 μH. 37.68 μH. 113.04 μH. 3.768 μH. 1.1304 μH. 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 Zero. ab Bo cosω t. abω Bo sinω t. Bo ω sinω t. Zero. ab Bo cosω t. abω Bo sinω t. Bo ω sinω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The potential that appears at a point in space due to the current which caused it is called potential Accelerating Lagging the current Oscillating Retardation Accelerating Lagging the current Oscillating Retardation ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to No change in the impedance value An increase in the value of reactance Decrease in the value of reactance No change in the reactance value No change in the impedance value An increase in the value of reactance Decrease in the value of reactance No change in the reactance value ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m 144 μN. 1144 μN. 244 μN. 1440 μN. 144 μN. 1144 μN. 244 μN. 1440 μN. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be 37.5 V. 50 V. 150 V. 75 V. 37.5 V. 50 V. 150 V. 75 V. ANSWER DOWNLOAD EXAMIANS APP
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