What is induction motor and how it works?

What is meant by induction motor?

Definition of induction motor

: an alternating-current motor in which torque is produced by the reaction between a varying magnetic field generated in the stator and the current induced in the coils of the rotor.

What is induction motor example?

Examples: Compressor, Crushers, Conveyors, etc. Class D Motor: Highest Starting torque of all the class motor, low starting current and high operating slip. This type of motors has low efficiency suitable for intermediate loads. Examples: Bulldozers, Die stamping, etc.

Where are induction motors used?

AC induction motors are the most common electric motors in the world. These simple, reliable and economical motors are found in refrigerators, washing machines and furnaces, as well as conveyors, pumps, winders, wind tunnels and other industrial equipment.

Why starter is used in induction motor?

⇒ The starter is a device which is basically used to limit the starting current by supplying reduced voltage to the motor at the time of starting. From the expression of rotor current it can be seen that the current at start can be controlled by : By reducing the supply voltage at the time starting.

Can induction motor runs at synchronous speed?

The Induction Motor cannot run at Synchronous speed because the Slip is never zero in an Induction Motor.

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Why is an induction motor called a rotating transformer?

The transformer does not have the air gap. but the induction motor has the air gap for its operation. Without air gap, the motor rotation is not possible, therefore, air gap is kept in the motor. That is why Induction Motor is called Rotating Transformer.

What is the maximum speed of an induction motor?

practically, the Motor can be run at 3492 RPM at 60 Hz.

Who invented induction motor?

What are 3 phase induction motors used for?

Applications of 3-Phase Wound-Rotor Induction Motor

They are used for loads that requires speed control. Typical applications of wound rotor or slip ring induction motors are crushers, plunger pumps, cranes & hoists, elevators, compressors and conveyors.