# What are the special features of commercial electric motor?

Contents

## What is commercial electric motor?

Commercial motors are difference from simple electric motors in the following ways. In commercial motor an electromagnet is used in place of permanent magnet. Commercial motors have more number of turns of conducting wire in current carrying coil. Commercial motors have soft iron core on which the coil is wound.

## What is the major function of electric motor?

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor’s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor’s shaft.

## What are the 3 main parts every electric motor must have and explain their function?

Electric motor designs can vary quite a lot, though in general they have three main parts: a rotor, a stator and a commutator. These three parts use the attractive and repulsive forces of electromagnetism, causing the motor to spin continually as long as it receives a steady flow of electric current.

## How is the power of commercial motor enhanced?

A commercial electric motor is one which uses the following (i) An electromagnet in place of permanent magnet. … It enhances the power of motor. Thus, commercial electric motors do not use permanent magnet to rotate the armature because permanent magnets are weak and do not produce strong magnetic field in the region.

## In what ways can a motor be made more powerful?

We can increase the turning force (or torque) that the motor can create in three ways: either we can have a more powerful permanent magnet, or we can increase the electric current flowing through the wire, or we can make the coil so it has many “turns” (loops) of very thin wire instead of one “turn” of thick wire.

## What is the working principle of motor?

The DC motor is the motor which converts the direct current into the mechanical work. It works on the principle of Lorentz Law, which states that “the current carrying conductor placed in a magnetic and electric field experience a force”.

## What are the two main components of an electric motor?

The two main components of this kind of motor are the stator (stationary element) and the rotor (rotating element).

## What are the four parts of an electric motor?

Motor Components

The components of an electric motor may include a rotor, thin sheets of stacked metal called laminations, a stator, wire windings, magnets, a commutator, brushes, poles, electrical interconnects and a housing.

## What is the role of commutator in electric motor?

The commutator assures that the current from the generator always flows in one direction. … On DC and most AC motors the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.

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## What is the function of brushes in electric motor?

A brush or carbon brush is an electrical contact which conducts current between stationary wires and moving parts, most commonly in a rotating shaft. Typical applications include electric motors, alternators and electric generators.

## What are the three types of motors?

Basic motors have been classified into three distinct types: AC motor, DC motor, and specialized motors.

## What are the six parts of a simple motor?

• Stator / Armature Coil. The stator includes the main components of the electric motor. …
• Rotor Coil. As well as the stator coil, the more the number of turns on the rotor the greater the resulting spin. …
• Main Shaft. …
• Brush. …
• Bearing. …
• Pulley Drive. …
• Motor Housing.

21 мая 2017 г.

## How can the power of an electric motor be increased explain with any three points?

We can increase the turning force (or torque) that the motor can create in three ways: either we can have a more powerful permanent magnet, or we can increase the electric current flowing through the wire, or we can make the coil so it has many “turns” (loops) of very thin wire instead of one “turn” of thick wire.

## What is the role of split rings in electric motor?

Role of Split Ring in an Electric Motor

Split ring is used for reversing the direction of current in the coil. … Therefore, after every half rotation of the coil the direction of the couple rotating the coil remains the same and the coil continues its rotation in the same direction.

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## Why split rings are also called commutator?

The split ring in the electric motor is also known as a commutator that consists of a simple ring or cylindrical shell which is split axially with the parts insulated from each other. Split ring commutator function in dc motor: The split ring has the function of reversing the current at that point.