She invented the first reversible jacket.
Motor boats were invented in 1907.
Reversing polarity is not possible with an ac motor. Some do have wiring that will allow you to change rotation. The type and model of the motor can tell you if it is reversible.
the electromagnetic motor was invented by Nikola Tesla
A dc series motor can work on dc and ac because dc motors are totally reversible.
Nikola Tesla invented the poly-phase induction motor in 1883.
In 1920,English engineer Walker invented the frist stepper motor which was a switched reluctance stepper motor.
It is a type of transmission where you can shift forwards to backwards or the other way around with out having to come to a complete like normal tractors have to.
reversible
A dc series motor with speed control can be connected on ac supply because dc machines are totally reversible.
Charles kettering invented a motor company,the motor to a car so you don't have to crank it
Gottlieb Daimler, 1884