Explain three methods for making the motor spin fasteR?thanksmosqq
An AC motor can be made to spin faster by increasing the frequency or the number of poles or sometimes by increasing the horsepower or lessening the mechanical resistance. A DC motor can be made to spin faster by increasing the voltage and the resulting current.
For a DC motor with permanent magnets, the three methods to make it spin faster are: a) reduce the mechanical load and frictional loss. b) increase the voltage c) rewind the motor with less turns in the coils
making electric motor spin faster
1. Increase the voltage, 2. rewind the armature, 3. pedal faster...
Your motor caused by magnets is probably home made...? This is probably run from a battery. Put 2 batteries on this motor. Do it so that the plus of battery contacts the minus of the next battery then hook the exposed plus and minus of the two batteries to the motor. This will double the voltage and increase the speed. You can continue to add batteries until the motor either heats up to point it gets damaged or spins itself apart. You also go to radio shack and get battery holders that put the batteries in series for you. For the synchronous AC motor like these guys said the rpm (speed) = 120 times the frequency (60hz in USA) divided by the number of poles. Pretty hard to change speed of an synchronous motor on your own better to by VFD. Variable Frequency drive. Be careful with just saying AC motor since you can get universal motors. These will have brushes like a drill or router might have and these can be adjusted through voltage control.
