WorksheetsMotors review
Total questions: 12
Worksheet time: 9mins
Which of the following principles explains how an electric motor works?
Magnetic force
Magnetism
Electrolysis
Electromagnetism
Which is NOT a distinguishing feature of an electric generator?
An electric generator converts mechanical energy into electrical.
An electric generator converts electrical energy into mechanical energy.
It generates electricity
It is based on the principle of electromagnetic induction.
What do we call a device that converts electricity into mechanical movement?
electric charge
electric motor
electric current
electric plasma
He was credited for his discovery of electromagnetic induction.
Thomas Edison
Benjamin Franklin
Nikola Tesla
Michael Faraday
What are the three basic parts of an electric motor?
commutator, stator, and rotor
armature, brushes, and battery
commutator, armature, and brushes
battery, armature, and DC power supply
Which of the following is the CORRECT description of the operation of an electric motor?
The electric motor uses electricity.
The operation is based on the principle of electromagnetism.
The motor converts electric energy into mechanical energy.
All of the above.
What do you call a device that converts mechanical movement into electricity?
electric field
electric motor
electric generator
electric plasma
Name one factor that does not affect the size of a force in on a current-carrying conductor placed in a magnetic field?
Gravity
Magnetic flux density/size of magnetic field
Size of the current
Length of the conductor
Give two ways you can reverse the direction of a basic dc motor?
Reverse the current
Keep the current the same
Reverse the magnetic field
Keep the magnetic field the same
How does a split ring commutator work?
Swaps the contact evert full turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil do not experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
Name the effect that causes a coil of current-carrying wire in an electric motor to move.
The electromagnetism effect
The magnetic effect
The motor effect
