What is the working principle of a DC generator?
A DC generator operates on the principle of Faraday’s laws of electromagnetic induction. According to Faraday’s law, whenever a conductor is placed in a fluctuating magnetic field (or when a conductor is moved in a magnetic field) an EMF is induced in the conductor.
What is principle construction and working of DC 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”. And that force is the Lorentz force.
Which metal is used in large capacity DC generator?
It is made up of cast iron or steel. In small DC machines, it is made up of cast iron and in the case of large DC machines, it is made up of cast steel….Detailed Solution.
| Yoke | Cast steel |
|---|---|
| Armature core | Laminated steel |
| Commutator | Hard drawn copper |
| Brushes (small machine) | Copper or Carbon |
What is the basic principle of generator?
Electric generators work on the principle of electromagnetic induction. A conductor coil (a copper coil tightly wound onto a metal core) is rotated rapidly between the poles of a horseshoe type magnet. The conductor coil along with its core is known as an armature.
Is generator DC or AC?
Difference between AC and DC generator
| Parameters | AC Generator |
|---|---|
| Output Power | It generates AC electric power |
| Rings | They have slip-rings. |
| Current induction | Its output current can be induced either in the rotor or in the stator |
| Direction of Current | Electrical current reverses direction periodically. |
What is motor and its working principle?
The electric motor works on the principle of magnetic effects of current. Its principle is when a rectangular coil is placed in a magnetic field and current is passed through it, the coil rotates as a result of the forces acting on the coil. Rotor Armature: It performs continuous rotation while the motor is running.
What is the function of commutator?
The commutator on the DC generator converts the AC into pulsating DC. The commutator assures that the current from the generator always flows in one direction. The brushes ride on the commutator and make good electrical connections between the generator and the load.
What is the principle of DC generator?
Principle of DC Generator It is an electrical machine which converts mechanical energy into electrical energy. The principle of operation of the dc generator is based on dynamically induced emf. Whenever a rotating conductor cuts magnetic flux, dynamically induced emf is produced in it according to the Faraday’s law of electromagnetic induction.
How does a DC generator work?
Just as a simple DC electric motor uses direct current (DC) electricity to produce continual, rotary motion, so a simple DC generator produces a steady supply of direct current electricity when it spins around. Like a DC motor, a DC generator uses a commutator.
What is the basic operation of a generator?
Broadly defining, a generator is a generic term for a device that converts mechanical energy to electrical energy, and an alternator is a type of generator that generates an alternating current. The fundamental principle behind the operation of any electrical generator is Faraday’s law of electromagnetic induction.
What are the parts of a DC generator?
It mainly consists of three main parts, i.e. Magnetic field system, Armature and Commutator and Brush gear. The other parts of a DC Generator are Magnetic frame and Yoke, Pole Core and Pole Shoes, Field or Exciting coils, Armature Core and Windings, Brushes, End housings, Bearings and Shafts.