What is the basic principle behind the operation of an electric motor?

Comprendere il Motore Elettrico

Quiz
•
English
•
9th Grade
•
Hard
Tatiana Perini
Used 2+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Conversion of thermal energy into mechanical energy
Interaction between a magnetic field and electric current
Transformation of chemical energy into light energy
Friction between mechanical components
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the main components of a simple electric motor?
Battery, resistor, capacitor
Rotor, stator, commutator, brushes
Pistons, cylinders, crankshaft
Transformer, diode, inductor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the commutator do in a direct current motor?
Increases the voltage of the circuit
Reverses the direction of the current in the rotor
Reduces the resistance of the circuit
Cools the motor while it operates
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the direction of the current in the motor is reversed?
The motor stops immediately
The motor continues to rotate in the same direction
The motor changes direction of rotation
The motor increases speed
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of the brushes in an electric motor?
Clean the internal components of the motor
Lubricate the moving parts
Maintain electrical contact between the external circuit and the rotor
Cool the motor during operation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does the rotor keep spinning in an electric motor?
Due to the inertia of the system
Thanks to the continuous action of the magnetic field
Thanks to the periodic reversal of the current by the commutator
Due to gravity
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main difference between an electric motor and a generator?
A motor produces electricity, a generator produces mechanical energy
A motor converts electrical energy into mechanical energy, a generator does the opposite
A motor uses fossil fuels, a generator does not
There is no significant difference
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