# Question: Which part of the motor holds the armature and commutator in place?

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The armature is an electromagnet made by coiling thin wire around two or more poles of a metal core. The armature has an axle, and the commutator is attached to the axle.

## What is commutator in electric motor?

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. … By reversing the current direction in the rotating windings each half turn, a steady rotating force (torque) is produced.

## What two parts of an electric motor are responsible for changing the direction of the current?

What two parts of an electric motor are responsible for changing the direction of the current?

• the commutator and the rotor. the axle and the brushes.
• the commutator and the brushes.
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## Where is the armature in a DC motor?

D.c. motors are widely used with control systems. In the d.c. motor, coils of wire are mounted in slots on a cylinder of magnetic material called the armature. The armature is mounted on bearings and is free to rotate. It is mounted in the magnetic field produced by field poles.

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

Every electric motor has two essential parts: one stationary, and one that rotates. The stationary part is the stator.

## Why commutator is used 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.

## Can commutator convert AC to DC?

The commutator and brushes convert the DC to AC to keep the armature turning. … It doesn’t convert to ac. The armature coils are first connected to dc from the brushes, and current flows in one direction through the armature coil. Then, the coil rotates to align the magnetic field.

## Does the motor rotate continuously when there is current?

Because the current flows in opposite directions in the wires, Fleming’s Left-Hand Rule tells us the two wires will move in opposite directions. … If the coil of wire could carry on moving like this, it would rotate continuously—and we’d be well on the way to making an electric motor.

## What factors will affect the rotation of the simple electric motor?

The speed of rotation of the coil can be increased by:

• increasing the size of the current;
• using a stronger magnet;
• increasing the number of turns of wire in the coil;
• reducing friction between the coil and the axel it rotates on.

## Which part of the DC motor is used to change the direction of current?

Some DC motors have a device called a commutator which switches the current direction so the motor keeps turning when DC is applied. This would be accomplished by mechanical switching involving brush electrical contacts. So they can be called “brushed DC motors .”

## What is the armature in a DC motor is connected to?

A very basic DC motor is quite simple: An armature carrying a current, connected through brushes and commutator segments to the supply end, placed between two magnets (electro or permanent) so the north and south poles are perpendicular to the armature.

## What is the purpose of brushes on a DC motor?

A carbon brush is a critical part of a dc motor, which relies on the brush for the transmission of electrical current coming from the machine’s rotating part. The brush is also responsible for changing the course of current in the conductors during the rotation process.

## What is the armature made of in a DC motor?

Armature Core

The core of the armature is made up of laminated thin metal plates instead of a single piece. The thickness of laminations depends on the supply frequency. It is approximately 0.5mm thick. The laminated silicon steel is used for the armature core to reduce the eddy current and hysteresis loss.

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## What are 3 parts of an electric motor?

No matter the type of motor, there are three basic parts: a stator, a commutator, and a rotor.

## What are the similarities and differences between electric motor and generator?

The Difference Between Electric Motor and Electric Generator in Tabular Form

Electric Motor Electric Generator
The shaft of the motor is driven by the magnetic force generated between the armature and the field. In electric generators, the shaft is attached to the rotor and is driven by the mechanical force.

## What are the 6 parts of an electric motor?

These six components include:

• 1) The Rotor. The rotor is the moving part of your electric motor. …
• 3) The Bearings. The rotor in your electric motor is supported by bearings, which allow it to turn on its axis. …
• 4) The Windings. …
• 5) The Air Gap. …
• 6) The Commutator. …
• What Do All of These Components Have in Common?

13.11.2019