Speed Control of Three Phase Induction Motor: The problem of speed control of three phase induction motor in particular is of great practical importance. In a number of industries motors…
Starting of Synchronous Motor and Precautions: As already stated the synchronous motor has got no self starting torque and the motor must first be brought up to synchronous speed by…
Star Delta Starter Working Principle and Circuit Diagram: This star delta starter method of starting of cage induction motors is based upon the principle that with 3 windings connected in star,…
Counter Emf Automatic Starter - Working Principle and its Drawbacks: This type of starter depends upon the build up of the back or counter emf to operate the contactors (a…
Drum Controller for DC Series Motor: DC series motors are often employed on cranes, elevators, tramcars and other applications, where the motor is under the direct control of an operator.…
DC Series Motor Starter Working Principle: The series motor starter serves the same purpose as the three- and four-point starters employed with shunt and compound wound motors. However, series motor…
3 Point Starter and 4 Point Starter -Construction and its Workings: The starter for a shunt motor (3 point starter) is shown in Fig. 1.59. At start all resistances are…
Repulsion Motor - Construction, Working Principle and Applications: The characteristics of repulsion motors are similar to those of a series motor, i.e., high starting torque and high light-load speed. Its…