As there is no constructional difference between dc generator and dc motor, similarly, there is no difference between the construction of a synchronous motor and a synchronous generator (alternator). The construction of a synch…
Power Transfer Stages of Induction Motor : An induction motor converts electrical power supplied to it into mechanical power. The various stages in this conversion are called power transfer stages in an induction motor. The 3-ph…
Most of the motors used for household and commercial purposes are induction motors. The use of an induction motor as an induction generator is insignificant. An induction motor has nearly constant speed motor characteristics. Oth…
This test is similar to the no-load test performed on a transformer. The purpose of this test is to determine the no-load losses , no-load power factor, and constants R o and X o of the equivalent circuit. The no-load losses i…
The various types of starters used for starting a 3-phase induction motor are, Full Voltage Starting, Direct-on-line (DOL) starter (full voltage starting). Reduced Voltage Starting, Autotransformer starter. Star-delta starter (re…
The torque T, of an induction motor, is proportional to the product of stator flux per pole (Φ), rotor current (I), and the power factor of the rotor. The torque of an induction motor is due to the interaction of the rotor and st…
Construction of Variable Reluctance Stepper Motor : It is the most basic type of stepper motor . The stator of this motor consists of a three-phase wounded type. It has six salient poles with concentrated windings around each on…
