- 1 What is the working principle of electric motor?
- 2 How does electricity turn a motor?
- 3 What is an electric motor explain with diagram?
- 4 How do you make an electric motor more powerful?
- 5 How is an electric generator like an electric motor in reverse?
- 6 What are electric motors used for?
- 7 Why do electric motors rotate?
- 8 How fast does an electric motor turn?
- 9 What causes an electric motor to rotate?
- 10 What is an electric motor class 10th?
- 11 What is the role of brushes in electric motor?
What is the working principle of electric motor?
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.
How does electricity turn a motor?
Electric motors turn electricity into motion by exploiting electromagnetic induction. A simple direct current (DC) motor is illustrated below. The motor features a permanent horseshoe magnet (called the stator because it’s fixed in place) and an turning coil of wire called an armature (or rotor, because it rotates).
What is an electric motor explain with diagram?
Electric motor: A motor is a device which converts electrical energy into mechanical energy. Principle of motor: A motor works on the principle that when a rectangular coil is placed in a magnetic field and current is passed through it. Whereas the force on the side CD of the coil is in the upward direction.
How do you make an electric motor more powerful?
We can increase the turning force (or torque) that the motor can create in three ways: either we can have a more powerful permanent magnet, or we can increase the electric current flowing through the wire, or we can make the coil so it has many “turns” (loops) of very thin wire instead of one “turn” of thick wire.
How is an electric generator like an electric motor in reverse?
A generator converts mechanical energy into electrical energy, while a motor does the opposite – it converts electrical energy into mechanical energy. What’s reversed is the flow of electricity, not the activity of the machine itself.
What are electric motors used for?
An electric motor is a device used to convert electrical energy into mechanical energy. Scientifically speaking, the electric motor is a unit used to convert electric power into motive energy or electrical energy into mechanical energy.
Why do electric motors rotate?
They operate using principles of electromagnetism, which shows that a force is applied when an electric current is present in a magnetic field. This force creates a torque on a loop of wire present in the magnetic field, which causes the motor to spin and perform useful work.
How fast does an electric motor turn?
Motor Wiring and Number of Poles A 60 Hz power supply changes polarity 60 times per second, and a two-pole motor will spin at 3,600 rpm when connected to this source. A four-pole motor will only rotate at 1,800 rpm. For 50 Hz motors, the speed is 3,000 rpm with 2 poles, and 1,500 rpm with 4 poles.
What causes an electric motor to rotate?
A coil of wire carrying a current in a magnetic field experiences a force that tends to make it rotate. This effect can be used to make an electric motor.
What is an electric motor class 10th?
The Electric Motor. An electric motor is used to convert electrical energy into mechanical energy. Motors convert electric energy to mechanical work. The opposite is done by generators that convert mechanical work to electrical energy.
What is the role of brushes in electric motor?
IN ELECTRIC MOTOR the function of brushes is to make contact with the rotating rings and through them to supply current to the coil. function of commutator in an electric motor is to reverse the direction of current through the coil periodically.