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Electric Motors MCQ (Multiple Choice Questions) PDF Download
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The Electric motors Multiple Choice Questions (MCQ Quiz) with Answers PDF (Electric Motors MCQ PDF e-Book) download to practice Grade 7 Science Tests. Study Electrical Circuits and Electric Currents Multiple Choice Questions and Answers (MCQs), Electric Motors quiz answers PDF for homeschool certification courses. The Electric Motors MCQ App Download: Free learning app for electrical circuits and currents, electric motors, chemical effect of electric current test prep for virtual elementary school.
The MCQ: A magnet may attract or repel by; "Electric Motors" App Download (Free) with answers: Another magnet; Electric current; Resistor; Dynamo; for homeschool certification courses. Solve Electrical Circuits and Electric Currents Quiz Questions, download Apple eBook (Free Sample) for virtual elementary school.
Electric Motors MCQ (PDF) Questions Answers Download
To make the coil keep rotating, the current is reversed after every half turn by a device called
- brush
- commutator
- mutator
- carbon spring
A magnet may attract or repel by
- another magnet
- electric current
- resistor
- dynamo
Electric motor changes electrical energy into
- potential energy
- thermal energy
- heat energy
- kinetic energy
Many machines we use, are powered by
- thermal energy
- sound energy
- electric motors
- dynamos
The magnetic field of the coil and the permanent magnet
- attract each other
- repel each other
- combine with each other
- stay with each other
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