The more turns of wire that cut through the magnet’s magnetic field, the stronger the force on the wires will be and, again, the spinning shaft will turn with more force. With more force, a greater load can be placed at the end of the shaft.
How can we increase the force of electric motor?
Answer: To increase the speed of the motor: Increase the current in the coil. Increase the number of loops on the spinning coil. Increase the strength of the magnet.
How can you increase the amount of force applied on the coil in an electric motor?
(i) by moving a coil in a magnetic field or by changing the magnetic field around it. (ii) By increasing the number of coils the induced current value can be increased.
Can we increase the RPM of motor?
Yes, but with a small amount above the maximum speed under normal rated conditions. Increasing the speed can be achieved by increasing the supply frequency as the speed and frequency are directly proportional; however, there are two constraints.
How do you reduce the rpm of an electric motor?
A couple of things you can do:
- Use gears to change ratio of speed, which is what you’re going to do. …
- Use a stepper motor, which are commonly used for high-torque, low RPM applications.
- Find some sort of PWM control circuit to slow it down, although you probably won’t be able to get it down to 5-10RPM.
Why will a motor not work without a commutator?
No, a direct current motor cannot run without a commutator because there is no induced electromotive force inside the armature. The commutator plays the function of supplying current to the armature from the brush. That is why the armature removed will not supply the motor. Further, it will stop the running.
How do you change the speed of an electric motor?
AC motors are constant speed devices but their speed can vary if you change the input voltage or frequency or the windings that make the motor rotate. The most common and efficient way of changing the speed is to vary the frequency by using an inverter as the power supply.
How do you make a motor faster?
One easy way to make the motor run faster is to add another magnet. Hold a magnet over the top of the motor while it is running. As you move the magnet closer to the spinning coil, one of two things will happen. Either the motor will stop, or it will run faster.