Electric Motors Multiple Choice Questions (MCQ) PDF Download

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