Synchronous Motor

Definition: The motor which runs at synchronous speed is known as the synchronous motor. The synchronous speed is the constant speed at which the motor generates the electromotive force. The synchronous motor is used for converting the electrical energy into mechanical energy. Construction of Synchronous Motor The stator and the rotor are the two main …

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Difference Between Intrinsic and Extrinsic Semiconductor

The Intrinsic and Extrinsic semiconductors are distinguished from each other considering various factors such as doping or the addition of the impurity, density of electrons and holes in the semiconductor material, electrical conductivity, and its dependency on various other factors. The difference between the two types of semiconductor is given below in detail. Intrinsic Semiconductor …

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Distribution Factor

The Distribution Factor or the Breadth Factor is defined as the ratio of the actual voltage obtained to the possible voltage if all the coils of a polar group were concentrated in a single slot. It is denoted by Kd and is given by the equation shown below. In a concentrated winding, each phase of …

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Coil Span Factor

The Coil Span Factor or Pitch Factor KC is defined as the ratio of the voltage generated in the short pitch coil to the voltage generated in the full pitch coil. The distance between the two sides of a coil is called the Coil Span or Coil Pitch Factor. It is also known as Chording Factor. …

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Synchronous Machine

Synchronous Machine constitutes of both synchronous motors as well as synchronous generators. An AC system has some advantages over a DC system. Therefore, the AC system is exclusively used for the generation, transmission, and distribution of electric power. The machine which converts mechanical power into AC electrical power is called a Synchronous Generator or Alternator. …

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4 Point Starter

A 4 Point Starter is almost similar in functional characteristics to 3 Point Starter. In the absence of back EMF, the 4 Point Starter acts as a current limiting device while the starting of the DC motor. 4 Point Starter also acts as a protecting device. The basic difference in 4 Point Starter as compared …

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3 Point Starter

3 Point Starter is a device whose main function is starting and maintaining the speed of the DC shunt motor. The 3 point starter connects the resistance in series with the circuit which reduces the high starting current and hence protects the machines from damage. Mainly there are three main points or terminals in 3 …

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