WorksheetsSUMMATIVE TEST
Total questions: 25
Worksheet time: 17mins
What is the main function of an electric motor?
To produce light
· To convert electrical energy into movement
· To store energy
To create sound
Which part of a DC motor reverses the direction of current?
Brushes
Stator
Commutator
Shaft
What kind of motor is used in electric fans and washing machines?
DC MOTOR
AC MOTOR
UNIVERSAL MOTOR
STEPPER MOTOR
The motor in a cellphone that makes it vibrate is called _______
Magnetic motor
Sound Motor
Vibration Motor
Heat Motor
The armature is the part of the motor that spins
TRUE
FALSE
The stator moves while the armature stays still.
TRUE
FALSE
A universal motor can work on both AC and DC electricity.
TRUE
FALSE
It is the part of the motor that stays still and produces a magnetic field
(a)
The small motor inside a cellphone that makes it vibrate uses this type of current.
(a)
The metal rod that transfers the spinning motion to a machine part
(a)
It is the rotating part of a DC motor that produces mechanical energy.
Stator
Rotor
Armature
Field Coil
What converts mechanical energy into electrical energy?
Motor
Generator
Battery
Resistor
In a DC generator, the device that changes alternating current to direct current is called a ________.
Split ring
Commutator
Slip ring
Armature
Which part of a DC motor provides the magnetic field?
Brushes
Armature
Field Magnets
Shaft
In an AC generator, current changes direction because of ________.
Split ring
Slip ring
Commutator
Brushes
What type of generator is used in most household power stations?
DC Generator
AC Generator
Static Generator
Magnetic Generator
What type of generator is used in most household power stations?
DC Generator
AC Generator
Static Generator
Magnetic Generator
What type of generator is used in most household power stations?
(a)
The stationary part of a generator or motor.
(a)
It is connected to the armature to transfer current from the rotating part.
(a)
The part that rotates inside the magnetic field in both motors and generators.
(a)
Type of generator that produces alternating current.
(a)
The commutator in a DC motor reverses the direction of current every half turn. _____
TRUE
FALSE
The commutator in a DC motor reverses the direction of current every half turn. _____
TRUE
FALSE
An AC generator uses slip rings instead of a commutator. _____
TRUE
FALSE
