Welcome to the Quiz!
This quiz contains 5 questions from a mix of 1 subtopics.
Using Fleming's left hand rule, which way will the coil above rotate?
Clockwise
Anticlockwise
|
What do we call the blue device labelled A in the diagram above?
Double ring
Double disk
Split-ring commutator
|
How the split ring commutator ensure the coil rotates in one direction
current / half / full / same / opposite
- The split-ring commutator swaps the positive and negative connections every turn.
- Therefore, the direction of the through the coil reverses every half turn.
- This means that the forces acting on the coil will always be acting in the direction.
- This causes the coil to rotate continuously in one direction.
|
heat / motion / electricity
Overall, electric motors use to create a rotational .
|
Give three ways to increase the speed of rotation in an electric motor
|