Physics, asked by Delcy, 1 year ago

Explain the working of an electric motor.

Answers

Answered by Anonymous
7
I already give the answer of this ,
the main principle of elctric motor is based upon the Fleming left hand rule
Whenever a current carrying conductor is placed in a magnetic field, the conductor experiences a force which is perpendicular to both the magnetic field and the direction of current. According to Fleming's left hand rule , if the thumb, fore-finger and middle finger of the left hand are stretched to be perpendicular to each other as shown in the illustration at left, and if the fore finger represents the direction of magnetic field, the middle finger represents the direction of current, then the thumb represents the direction of force. Fleming's left hand rule is applicable for motors.
working of motor.......
If we stretch the first finger, second finger and thumb of our left hand to be perpendicular to each other AND direction of magnetic field is represented by the first finger, direction of the current is represented by second finger then the thumb represents the direction of the force experienced by the current carrying conductor.
Above animation helps in understanding the
working principle of a DC motor . When
armature windings are connected to a DC supply, current sets up in the winding. Magnetic field may be provided by field winding (electromagnetism) or by using
permanent magnets . In this case, current carrying armature conductors experience force due to the magnetic field, according to the principle stated above.
Commutator is made segmented to achieve unidirectional torque. Otherwise, the direction of force would have reversed every time when the direction of movement of conductor is reversed the magnetic field.
This is how a DC motor works !
Attachments:
Answered by krishnaverma05
22

The device which convert the electrical energy into mechanical energy called electric motor.

Eg. Fan, Washing machine etc....

Construction....

• Armature coil

•Two magnet

•Axle

•Brushes ( B1 and B2)

•Split rings

• Battery

Working....

When the source battery is connected to the brushes the current while flow through the armature coil ABCD.

When the current flow in the armature coil ABCD then according to Fleming's left hand rule the force in AB is in the downward direction and similar in the armature coil CD, the force in the upward direction.

This is simultaneously phenomenon which rotate the motor ...

Hope this will help you....

Attachments:
Similar questions