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Electric Motors MCQ with Answers PDF

Electric motors Multiple Choice Questions (MCQ) to practice electric motors quiz answers PDF to study online 7th grade science course. Electrical Circuits and Electric Currents Multiple Choice Questions and Answers (MCQs), Electric Motors quiz questions PDF for online education. "Electric Motors Book" PDF: electrical circuits and currents, electric motors, chemical effect of electric current test prep for taking online classes.

"To make the coil keep rotating, the current is reversed after every half turn by a device called" Multiple Choice Questions (MCQ) on electric motors with choices brush, commutator, mutator, and carbon spring for online education. Study electrical circuits and electric currents quiz questions for online certificate programs for online school and college.

MCQs on Electric Motors

MCQ: To make the coil keep rotating, the current is reversed after every half turn by a device called

brush
commutator
mutator
carbon spring

MCQ: A magnet may attract or repel by

another magnet
electric current
resistor
dynamo

MCQ: Electric motor changes electrical energy into

potential energy
thermal energy
heat energy
kinetic energy

MCQ: Many machines we use, are powered by

thermal energy
sound energy
electric motors
dynamos

MCQ: The magnetic field of the coil and the permanent magnet

attract each other
repel each other
combine with each other
stay with each other