Electric Motors MCQs Quiz Worksheet PDF Download

Learn electric motors MCQs, science test for online learning courses and test prep to practice. Electrical circuits and electric currents quiz questions has multiple choice questions (MCQ), electric motors test to learn for getting ready for 7th grade science.

Science practice test MCQ: 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 daily quiz questions with online cognitive learning portal for students of class 7. Free science revision notes to learn electric motors quiz with 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