What is the working principle of DC machine?
The working principle of a DC machine is when electric current flows through a coil within a magnetic field, and then the magnetic force generates a torque that rotates the dc motor. The DC machines are classified into two types such as DC generator as well as DC motor.
What is the basic principle of operation of DC generator?
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.
How does a DC generator work explain?
The working principle of the DC generator is based on Faraday’s laws of electromagnetic induction. When a conductor is located in an unstable magnetic field, an electromotive force gets induced within the conductor. If the conductor is present with a closed lane, the current which is induced will flow in the lane.
What is DC generator PDF?
A dc generator is an electrical machine which converts mechanical energy into direct current electricity. This energy conversion is based on the principle of production of dynamically induced emf. CONSTRUCTION: Page 2.
What are the main parts of DC machine?
Construction wise there are four Main parts of DC machine namely field magnet, armature, commutator and brush. Actually a DC machine means a DC motor or a DC generator constructionally both are same. If rotor of a DC machine is rotated through means of a prime mover.
What are the applications of DC machine?
Generally, the DC machines are used in supplying excitation of an alternator and it is also used in many applications like welding process, variable-speed motor drives and electrolytic and electroplating process. Small DC machines are used as a control device such as speed sensing, positioning, and tracking.
What are the applications of DC generator?
Applications of DC Generators
- These generators are used to charge batteries, provide lighting and provide excitation to alternators.
- They are used to provide field excitation current for regenerative braking in DC locomotives.
- They are used in DC motors where speed control is necessary.
What is DC generator with diagram?
A DC Generator is an electrical device which converts mechanical energy into electrical energy. It mainly consists of three main parts, i.e. magnetic field system, armature and commutator and brush gear.
What are the advantages of DC generator?
From what you read above, we can say that the main advantages of DC generators include simple design, simple parallel operation, and fewer problems of system stability.
What is the working principle of a DC machine?
A DC machine is an electromechanical energy alteration device. The working principle of a DC machine is when electric current flows through a coil within a magnetic field, and then the magnetic force generates a torque which rotates the dc motor. The DC machines are classified into two types such as DC generator as well as DC motor.
How does a DC generator work and how does it work?
DC machine works on Faraday’s law of electromagnetic induction principle, which states that when a conductor cuts the magnetic lines of forces then an electromagnetic force will be induced within the conductors. In a DC generator, when the coil placed in the magnetic field is rotated by means of a prime mover or any handle.
Who was the inventor of the DC machine?
The first commutator was invented by William sturgeon using the machine in the year 1837. After that, an American inventor namely “Thomas Davenport” was invented another commutator type DC machine and afterward, AC machines are invented. This machine is used to control the devices which operate using alternating current.
How is the emf induced in a DC generator?
The coils cut the magnetic lines of forces to induce an EMF. This induced Emf develops current in the armature winding. The direction of this current in DC generators can be observed through the rule of Fleming’s Right-hand.