Differential Protection of Generator & Alternator

The most common schemes employed for the protection of a three-phase generator stator windings from earth faults phase-to-phase faults make use of circulating current principle. In these protection schemes, currents at the two ends of the protected section are compared. Under normal conditions, these currents are equal became different on the occurrence of a fault in

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3 Phase 4 Wire System

In this system, a delta/star-connected transformer is used. Three wires are taken from the phases and the fourth wire (i.e. neutral wire) is taken from the star point. If the voltage of each phase conductor to neutral is V then line to line voltage between the phases will be √3V. The 3 phase 4 wire

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Transistor as a Switch

A transistor can also act as a switch and can turn ON and OFF power in an electrical load. The action of the transistor, while using a transistor as a switch is explained below: Switching Action of a Transistor To understand the switching action of a transistor in detail, consider the collector characteristics for a

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Working of Stepper Motor

Hi friends, In this article, I am discussing the “working of stepper motor“. This article will definitely increase your knowledge about stepper motors, I hope so. The stepper motors convert electrical pulses received by their excitation (control) winding into discrete angular displacements-commonly called as steps. The characteristic property of the stepper motor is the step-by-step turning of the

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OTEC Working Principle

Hi friends,   In this article I am discussing the OTEC working principle, types, advantages and disadvantages. You will find this article informative and interesting, I hope so.   The oceans and rivers cover about 70% of the earth’s surface which receives, store and dissipates the vast amount of thermal energy. Thus they act as

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