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Explain Eddy currents. Eddy currents: Magnetic materials placed as in alternating magnetic fields have eddy currents also induced in them. It is because the material is subject
Currents induced in armature conductors of a d.c. generator are alternating. To make their flow unidirectional in the external circuit, we need a commutator. Moreover, these curren
Field-Effect Transistor: The field-effect transistor that is abbreviated as FET relies on an electric field to control the shape and therefore the conductivity of a channel of
Q. A rotating electric machine with uniform air gap has a cylindrical rotor winding with inductance L 2 =1 H and a stator winding with inductance L 1 =3H. Themutual inductance va
Capacitor-input filter: The capacitor-input filter, as well called pi filter because of its shape which looks like the Greek letter pi, is a sort of electronic filter. Filter
Turn-on, turn-off, and storage delay: The Bipolar transistor shows a few delay characteristics while turning on and off. Most of the transistors, and particularly power transi
Q. For the configurations of the coupled coils shown in Figure, obtain the voltage equations for v 1 and v 2 .
Explain Ferrimagnetic magnetic materials. Ferrimagnetic Materials: In such materials unequal magnetic dipoles are lined up anti-parallel to each other. And permeabilities are
The force between two wires 1 metre apart and each carrying 1 amp is 2 x 10 -7 Newtons when in a vacuum (or in practice, air).However, it is found experimentally that the force is
Describe 74LS139 memory decoder. The 74LS139 is a dual 2-to-4 line decoder. This contains two separate 2-to-4 line decoders - all with its address, output and enable connection
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