What are the types of motors?

What are the types of motors?

Types of Electric Motors

• 1). DC Shunt Motor.
• 2). Separately Excited Motor.
• 3). DC Series Motor.
• 4). PMDC Motor.
• 5). DC Compound Motor.
• 1). Synchronous Motor.
• 2). Induction Motor.
• 1). Stepper Motor.

What is armature class 10th?

Armature: It is a rectangular iron core wrapped by the copper coil through which electricity passes and due to magnetic field it experiences a force and rotates. Brushes: It conducts current between stationary wires and moving parts, most commonly in a rotating shaft.

Why brushes are used in generator?

Brushes carry the current outside the generator. The rotor coils (windings) turn inside a stationary magnetic field which creates (induces) electrical current within the coils. The coils are connected to slip rings. The brushes “Brush” against the slip rings and make electrical contact with them.

Why carbon is used in brushes?

Carbon is used because of its self-lubricating properties, this means less wear on the commutator in comparison with brushes made of harder metals such as copper or steel, in addition to this, it is a good conductor.

Why only carbon brushes are used in motor?

Carbon brush basics In dc motors, the carbon brush makes sure the commutation process remains free from sparks. This contact is a sliding contact capable of transmitting electric current from static to the rotating part of a generator or electric motor.

Why are carbon brushes used in class 10 motors?

Complete answer: Brushes are used to serve electrical contact between the stationary points and the moving surfaces. They are mainly used to transfer power from rotatory armature coils to stationary wires. They are used to reduce the damage of the motors.

What is commutator in motor Class 10?

Commutator: It is the rotating interface of the armature coil with a stationary circuit. Field Magnet: The magnetic field helps to produce a torque on the rotating armature coil by virtue of Fleming’s left-hand rule.

What is the function of commutator and carbon brushes?

1 Answer. Split commutators are rings that allow Direct current to move in the opposite direction to maintain a full rotation. Carbon Brushes are used to conduct the electricity. They are attached to the commutators, and the commutators are attached to the wire loop.

What is the principle of an electric motor write the function of split rings and carbon brushes?

1) Armature- Rotates when electric current is passed hence its kinetic energy can be used for various purposes. 2) Brushes- Maintains contact of the armature coil with the main circuit while rotating. 3) Split Rings- Prevents the rotation of the main circuit while the rotation of armature coil.

Why carbon brush is used in AC generator?

A carbon brush is a sliding contact used to transmit electrical current from a static to a rotating part in a motor or generator, and, as regards DC machines, ensuring a spark-free commutation.

How does a brush generator work?

A brushed alternator uses brushes (or carbon brushes) to help conduct electricity through an alternator or generator. The brushes act as an electrical contact to help move the current from the alternator to that which needs power. They do this by transferring the current as they spin with the rotor of the alternator.

Is commutator part of an AC generator?

AC generator does not have commutators. DC generators have commutators to make the current flow in one direction only. AC generators have slip-rings.

What’s the difference between an AC and DC generator?

Uses & Design Differences An AC generator creates an alternating current that periodically reverses direction. But in a DC generator, a direct current flows in one direction. In an AC generator, the coil through which current flows is fixed and the magnet usually moves.

How does a simple motor and generator work?

How Does an Electric Generator Work? An electric generator is the exact opposite of an electric motor. Rather than using electricity to create motion, electric generators in Lethbridge convert mechanical energy into electrical energy. The transfer of energy begins with the mechanical rotation of the shaft and rotor.

What is DC generator principle?

DC generator operates on the principle of the dynamically induced electromagnetic force. When a conductor is placed in a varying magnetic field, an electromotive force gets induced within the conductor. This induced e.m.f magnitude is measured using the equation of the electromotive force of a generator.

What are the main parts of a DC generator?

Parts of a DC Generator

• Stator. The main function of the stator is to provide magnetic fields where the coil spins.
• Rotor. A rotor in a DC machine includes slotted iron laminations with slots that are stacked to shape a cylindrical armature core.
• Armature Windings.
• Yoke.
• Poles.
• Pole Shoe.
• Commutator.
• Brushes.