Where Is Induction Motor Used?

Used in almost every process, induction motors are mainly used in

water pumps, kitchen appliances, fans and air conditioners, automobiles and common industrial machinery like boiler pumps and compressors

.

Why is an induction motor used for most domestic applications?

Induction motors are used in industrial and domestic appliances because these

are rugged in construction requiring hardly any maintenance

, that they are comparatively cheap, and require supply only to the stator.

What is the application of induction motor?

Used

for the loads that require speed control

. The wound rotor induction motors are used in conveyors, cranes, pumps, elevators, and compressors. The maximum torque is above 200 percent of the full load value while the full load slip may be as low as 3 percent. The efficiency is about 90 %.

What is an example of an induction motor?

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.

What are 3 phase motors used for?

A three-wire three-phase circuit is usually more economical than an equivalent two-wire single-phase circuit at the same line to ground voltage because it uses less conductor material to transmit a given amount of electrical power. Three-phase power is mainly used

directly to power large motors and other heavy loads

.

What is advantage and disadvantage of induction motor?

Induction motors always operate under lagging power factor and during light load conditions they operate at very worst power factor (0.2 to 0.4 lagging). Some of the disadvantages of poor power are

increase in I

²

R losses in the system

, reduction in the efficiency of the system.

What are two types of induction motor?

Single-phase induction motors and three-phase induction motors

are the two main types of induction motors. As their names imply, a single-phase induction motor is connected to a 1 phase AC power supply and a three-phase induction motor is provided with 3 phase AC power supply.

What are the advantages of induction motor?

• The working of an induction motor is very simple. …
• It is very cheap in cost to compare the other motors.
• It is a highly efficient motor. …
• The brushes are not used in an induction motor. …
• The maintenance of IM is very less compared to the DC motor and synchronous motor.

What is induction motor and its principle?

Working Principle of Induction Motor

The motor which works on the principle of electromagnetic induction is known as the induction motor. The electromagnetic induction is the phenomenon in which

the electromotive force induces across the electrical conductor when it is placed in a rotating magnetic field

.

What are the main parts of induction motor?

• Stator. The stator is the stationary portion of the motor and delivers a rotating magnetic field to interact with the rotor. …
• Rotor. The rotor is the central component of the motor, and is fixed to the shaft. …
• Shaft. The motor shaft is fixed within the rotor, and rotates with it. …
• Bearings. …
• Casing.

How does an induction motor start?

When the supply is connected to the stator of a

three-phase induction motor, a rotating magnetic field is produced, and the rotor begins rotating and the induction motor starts. At the time of starting, the motor slip is unity, and the starting current is very large.

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.

Is 3 phase induction motor is self starting?

Three-phase induction motor is

self-starting

, because winding displacement is 120 degrees for each phase and supply also has 120 phase shift for 3-phase. It results in a unidirectional rotating magnetic field is developed in air gap which causes 3-phase induction motor to self-start.

What is the symbol of motor?

Motor. A motor, shown as

a circle with the letter M inside it

, changes electricity into movement.

What are the advantages of 3 phase induction motor?

Unlike synchronous motors, a 3 phase induction motor has

a high starting torque, good speed regulation and reasonable overload capacity

. An induction motor is a highly efficient machine with full load efficiency varying from 85 to 97 percent.

What are the main parts of 3 phase induction motor?

• Stator frame,
• Stator core,
• Stator winding or field winding.