Final answer:
Electric motors convert electrical energy into mechanical energy, while generators convert mechanical energy into electrical energy. Transformers have unequal turns in primary and secondary coils to create a voltage ratio.
Step-by-step explanation:
Electric motors and generators are both devices that convert electrical energy into mechanical energy (motors) or mechanical energy into electrical energy (generators). However, there are a few key differences between them:
- Function: Electric motors convert electrical energy into mechanical energy to produce motion, while generators convert mechanical energy into electrical energy by using motion.
- Construction: Electric motors have a stationary part called the stator and a rotating part called the rotor, whereas generators have a rotating part called the rotor and a stationary part called the stator.
Regarding the number of turns in the primary and secondary coils of a transformer, they are never made equal because the primary coil is responsible for creating a changing magnetic field, while the secondary coil is designed to capture and transform that changing magnetic field into electrical energy. The ratio of turns in the primary and secondary coils determines the voltage ratio between the input and output of the transformer.
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