Electromagnetic Field Theory A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by 4t3. 24t. 12t. 12t3. 4t3. 24t. 12t. 12t3. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnetic field required to reduce the residual magnetism to zero is called Hysteresis. Saturation magnetism. Retentivity. Coercivity. Hysteresis. Saturation magnetism. Retentivity. Coercivity. 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 150 V. 50 V. 37.5 V. 75 V. 150 V. 50 V. 37.5 V. 75 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two point charges (Q and – Q) are situated at the vertex of the square. If potential at another vertex is 2 V, so potential at opposite vertex (diagonally) is √ 2 V. 1 V. Zero. 2 V. √ 2 V. 1 V. Zero. 2 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The useful magnetic flux obtainable from any closed surface is Constant Unity Both A and B None of these Constant Unity Both A and B None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m 2.4 mm. 8.4 mm. 4 mm. 10 mm. 2.4 mm. 8.4 mm. 4 mm. 10 mm. ANSWER DOWNLOAD EXAMIANS APP
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