Electromagnetic Field Theory Materials subjected to rapid reversals of magnetism should have high permeability. both a and b. low permeability. low hysteresis loss. high permeability. both a and b. low permeability. low hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is 2 N. 5 N. 3.75 N. 2.5 N. 2 N. 5 N. 3.75 N. 2.5 N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Find the strength of the magnetic field when a 2m long conductor is moving with a velocity 4m/s inducing an emf of 20V. 5T. 0.5T. 10T. 2.5T. 5T. 0.5T. 10T. 2.5T. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is 15 W. 20 W. 50 W. 25 W. 15 W. 20 W. 50 W. 25 W. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as self inductance. mutual inductance. capacitance. series aiding inductance. self inductance. mutual inductance. capacitance. series aiding inductance. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An inductor designed with 400 turns coil wound on an iron core of 16 cm2 cross sectional area and with a cut of air gap length of 1 mm. The coil is connected to a 230 V, 50 Hz supply. Neglected coil resistance, core loss, iron reluctance and leakage inductance. Find the current in the inductor. 9.04 A. 2.28 A. 4.56 A. 18.08 A. 9.04 A. 2.28 A. 4.56 A. 18.08 A. ANSWER DOWNLOAD EXAMIANS APP
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