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Explain Magnetostriction.
Magnetostriction: If ferromagnetic materials are magnetized a small change of dimensions of the material obtains place. There is a small extension along with equivalent reduction of cross-section of the crystals of that the material is made. When this rapidly alternating magnetic fields so there is a rapid and continuous extension and contraction of the material. It is termed as magnetostriction. This magnetostriction is the main cause of hum in transformers and chokes.
Transistor as a switch: Transistors are generally employed as electronic switches, for both of the high power applications including switched-mode power supplies and low power
Q. Show Operation on JFET? The junction in the JFETis reverse-biased for normal operation.No gate current flows because of the reverse bias and all carriers flow from source to
If E b /N 0 = 20 in a coherent ASK system, find the value of Eb/N0 that is needed in a noncoherent ASK system to yield the same value of Pe as the coherent system.
Q. A current i(t) = 20 cos(2π × 60)t A fows through a wire. Find the charge flowing, and the number of electrons per second that are passing some point in the wire.
What is Inductor Inductor, also known as a choke, is another passive type electrical component designed to take benefit of this relationship by forming a much stronger magnetic
For a helical antenna, the half-power beamwidth and directive gain are given by where C = πD, N = L/S, and S = C tan α,in which α is called the pitch angle, and The
Common-base configuration: The common-base that is abbreviated as CB transistor configuration, which is as well termed as the 'grounded base' configuration, is displayed in
ABCD propagation of an optical ray through a system can be described by a straightforward two by two matrix. In ray optics, the feature of a system is known by the correspondin
Q. The N-coil windings of a three-phase, two-pole machine are supplied with currents ia,ib, and ic, which producemmfs given by F a = Ni a cos θm; F b = Ni b cos(θm - 120°); and
Switched Mode Power Supply (SMPS) Switching mode power supply converts an unregulated DC voltage to a regulated DC output voltage . SMPS stands for switched mode power
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