Electric Motors MCQs Quiz Worksheet PDF Book Download

Electric motors MCQs, electric motors quiz answers for online elementary school courses. Electrical circuits and electric currents multiple choice questions (MCQs), electric motors quiz questions and answers for online elementary education degree. Uses of electromagnets, earth wires, conductors and insulators, electric motors test prep for elementary school teaching certification.

Learn science MCQs: to make coil keep rotating, current is reversed after every half turn by a device called, with choices brush, commutator, mutator, and carbon spring for online elementary education degree. Free science student portal for online learning electric motors quiz questions, MCQs to find questions answers based online learning tests.

MCQ on Electric Motors PDF Book Download

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

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

B

MCQ: A magnet may attract or repel by

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

A

MCQ: Electric motor changes electrical energy into

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

D

MCQ: Many machines we use, are powered by

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

C

MCQ: Magnetic field of coil and permanent magnet

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

B