ELECTRIC MOTOR
Electric travels are everywhere! In your house, almost every mechanical movement that you see just about you is caused by an AC (alternating current) or DC (direct current) electric motor.
A simple motor has six parts:
* Armature or rotor
* Commutator
* Brushes
* Axle
* case magnet
* DC power supply of some sort
The Motor Effect
When a current is passed along a telegram in a magnetic line of merchandise, a drive may be exerted on the wire. This is the motor effect. The hale depends on the angle between the wire and the magnetic field lines. The force is biggest when the wire is perpendicular to the field lines, nil when parallel.
An electric motor is designed to use the motor effect. We can change its speed by alternating the current, and turnaround time its speed by reversing the current.
The helix in the motor shown (the armature coil) is obligate to rotate.
The coil is machine-accessible to a battery via two alloy or graphite brushes. These brushes are fixed onto a split-ring commutator which is connected to the rectangular coil.
When a current is passed through the coil, it spins because:
* a force acts on either side due to the motor effect
* the force on one side is in the opposite committal to the other side
The split ring commutator reverses the current every half-turn of the coil and because the sides swap over every half turn, the coil is pushed continually in the same direction over and over.If you want to establish a full essay, order it on our website: Orderessay
If you want to get a full essay, wisit our page: write my essay .
No comments:
Post a Comment