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Phase advancers: Phase advancers are used to better the power factor of induction motors. The low power factor of an induction motor is because of the fact that its stator winding draws exciting current, which lags behind the supply voltage by 900. If the exciting ampere turns can be given from some other a.c. source, then the stator winding will be relieved of exciting current and the power factor of the motor can be better.
Illustrate the mechanism of piezoelectric effect? Mechanism of Piezoelectric effect: Piezoelectric and inverse piezoelectric consequences are only exhibited through certain
The Josephson effect is a term given to the phenomenon of current flow across two superconductors separated by a very, thin insulating barrier. This arrangement, two superconductor
There are imaginary lines or path of the field in the given direction. The lines of force are assumed to make a closed path beginning from N pole and ending at S pole with no loss.
What is Refraction
Excitation of Modes in Fiber A multimode fiber is used to couple light into a single mode fiber. Both fibers have the same total diameter. Explain the coupling. Use
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the source com
You''ve recently wired up an experiment in the lab. Part of the experiment involves having two long wires extended 2 meters below the ground. One day, the experiment stops working.
Production of electricity by pressure: Certain crystals and semiconductors produce an emf between two opposite faces when the mechanical pressure on them is either increased or
Q. What is the focal length of a convex lens of focal length 30 cm in contact with a Concave lens of focal length 20 cm ? Is the system a converging or a diverging lens? Ignore
Explain the Schematic Diagrams of Electric Circuits Since figuring out what is happening in a circuit depends upon the way the elements are connected, one of the first hurdles
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