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Filters
Need of filter circuit Filters are the electronic circuits used along with rectifiers to get a pure dc voltage. From all the rectifiers circuits get pulsating dc o/p. Where pulsating…
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Difference between Resultant and Equilibrants
Following are four main difference in Resultant and Equilibrants force No. Resultant Equilibrant 1. Definition: A resultant of number of forces acting on a body is a single. Force which…
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What is Rectification
Rectification is the process of converting the alternating voltage or current into the corresponding direct (dc) quantity. (Direct voltage or current) The input to a rectifier is ac whereas its…
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TRACTION MOTOR
General requirements of Traction motors / traction system High starting torque A traction motor must have high starting torque. For urban and sub urban lines, the acceleration (speed at starting)…
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Single Phase AC System vs Three Phase AC System (with Picture)
Motor used – A.C. series motor Voltage - 15 KV to 25 KV This is the voltage of overhead wire and not of motor. Motor operates at 400 V or…
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Direct Current (DC) System
Motor used in Direct Current System - Dc Series Motor Dc Compound Motor (as regenerative braking is difficult for Dc series motor) Dc series motor has high starting torque and…
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Construction of DC Machine
The main parts of DC Machine (motor or generator) are as follows: Yoke Pole core and pole shoes Pole coil and field coil Armature core Armature winding or conductor Commutator…
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Types of Dc Machines
Following are three types of dc machines: 1) DC generator: "Energy can be converted from one form to other form" It is rotated by prime mover and produces a dc…