Electric Motors MCQs Quiz Worksheet PDF Download

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Study elementary school courses, online science degree programs MCQs: to make coil keep rotating, current is reversed after every half turn by a device called, for online courses with choices brush, commutator, mutator, and carbon spring for daily quiz questions with online cognitive learning portal for students of class 7. Free science student portal for online learning electric motors quiz questions, MCQs to find questions answers based online learning tests.

MCQs on Electric Motors Quiz PDF 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