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Learn Electric motors Multiple Choice Questions (MCQ Quiz) with Answers PDF to enroll digital science programs. Download the Electric Motors MCQ PDF e-Book to learn Class 7 Science Tests. Study Electrical Circuits and Electric Currents Multiple Choice Questions and Answers (MCQs), Electric Motors quiz answers PDF for science online academic pathways. Free Electric Motors MCQ App: Download the Class 7 Science Study App to learn electrical circuits and currents, electric motors, chemical effect of electric current test prep to build science digitally.

Study "Electric Motors MCQ" App Download with MCQ: To make the coil keep rotating, the current is reversed after every half turn by a device called; with answers: brush, commutator, mutator, and carbon spring. Solve Electrical Circuits and Electric Currents Quiz Questions, download Apple Book (Free Chapter) to enroll digital science programs.

Electric Motors MCQs PDF Download – Prep Test

MCQ 1: To make the coil keep rotating, the current is reversed after every half turn by a device called:

  1. brush
  2. commutator
  3. mutator
  4. carbon spring

MCQ 2: A magnet may attract or repel by:

  1. another magnet
  2. electric current
  3. resistor
  4. dynamo

MCQ 3: Electric motor changes electrical energy into:

  1. potential energy
  2. thermal energy
  3. heat energy
  4. kinetic energy

MCQ 4: Many machines we use, are powered by:

  1. thermal energy
  2. sound energy
  3. electric motors
  4. dynamos

MCQ 5: The magnetic field of the coil and the permanent magnet:

  1. attract each other
  2. repel each other
  3. combine with each other
  4. stay with each other

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