Three Phase AC Series Commutator Motor: This machine has a 3-phase stator winding similar to that of an ordinary induction motor and may be wound for high voltage if required.…
Types of Electric Drives: The various types of electric drives used in industry may be divided into three types, namely Group Drive, Individual Drive and Multi-motor drives. 1. Group Drive:…
Nature of Electric Supply: The nature of electric supply available may be 3-phase ac, single-phase ac or dc. In case three-phase ac supply is available, polyphase induction motor, squirrel cage…
Factors Governing Selection of Electric Motors: Parallel to the growth of machine tools, an equally rapid progress has been made in the field of electric motors. The electric motors of…
Special Features of Thyristor Drive Motors: The most commonly used dc motors for thyristor drive are separately excited and series excited dc motors. The thyristor drive motors usually differ from…
Protective Devices and Interlocks: Protective devices must be incorporated in the control circuit (or circuits) to interrupt the flow of current to the motor to guard against overloads or other…
Electromagnetic Relay - Definition, Construction and Working Principle: Electromagnetic Relay - A relay, in the general sense of the word, is any apparatus which serves to actuate or control the…
Magnetic Contactor - Definition, Working Principle and Types: Magnetic Contactor is a electromagnetically operated switches that provide a safe and convenient means for repeatedly making and breaking branch circuits. The…
