tell me about DC motor
Answers
Answer:
A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current flow in part of the motor.
Explanation:
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Answer:
A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy. The most common types rely on the forces produced by magnetic fields.
How does a DC motor start?
Starting of DC Motors. At the moment a DC motor is started the armature is stationary and there is no counter EMF being generated. ... In order to reduce this very high starting current, an external resistance must be placed in series with the armature during the starting period.
What does a DC motor do?
The DC motor is a machine that transforms electric energy into mechanical energy in form of rotation. Its movement is produced by the physical behavior of electromagnetism. DC motors have inductors inside, which produce the magnetic field used to generate movement.
What are the 3 types of DC motors?
There are 4 main types of DC motors:
Permanent Magnet DC Motors. The permanent magnet motor uses a permanent magnet to create field flux. ...
Series DC Motors. In a series DC motor, the field is wound with a few turns of a large wire carrying the full armature current. ...
Shunt DC Motors. ...
Compound DC Motors.
it also requires a starter and reason is....
Why does a DC motor requires a starter?
Starters are used to protect DC motors from damage that can be caused by very high current and torque during startup. They do this by providing external resistance to the motor, which is connected in series to the motor's armature winding and restricts the current to an acceptable level.
basis of working is as follows....
How does a basic DC motor work?
The basic component of a DC motor is a current carrying armature which is connected to the supply end through the commutator segment and brushes. The armature is placed between two permanent magnets which produce a magnetic field. ... This is how a DC motor Works.
Why are DC motors used?
DC motors have the advantage of: higher starting torque, quick starting and stopping, reversing, variable speeds with voltage input and they are easier and cheaper to control than AC. AC motor advantages include: lower power demand on start and minimal maintenance.
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