What type of motor turns slightly slower than the supplied frequency and can vary in speed based on the amount of load?
A. DC motor
B. Universal motor
C. Induction motor
D. Synchronous motor
A. Incorrect. DC motors are very useful for variable speed applications because adjusting the voltage can easily vary their speed.
B. Incorrect. Universal motors are typically used in small, high-speed applications, such as angle grinders.
C. Correct. Induction motors turn slightly slower than the supplied frequency and can vary in speed based on the amount of load.
D. Incorrect. Synchronous motors run at a fixed speed that is synchronized with the supply electricity.
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