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Electronics Robotics Final Review 1 (Semester 2)
Test Description: ER
Instructions: Answer all questions to get your test result.
1) Magnetic materials are known as:
A
Ferrous materials
B
Heavy materials
C
Electromagnetic materials
D
Solid materials
2) Which of these metals is magnetic?
A
Gold
B
Mild Steel
C
Aluminium
D
Silver
3) Which of these is NOT required to make an electromagnet?
A
Wire Coil
B
bar magnet
C
Source of current
D
Iron Core
4) Which of these is NOT a factor that effects electromagnet strength?
A
Temperature of the room
B
Type of material used for core
C
Number of coils
D
Amount of current
5) Ferrous metals have large amounts of_______
A
Aluminium
B
Amps
C
Iron
D
Copper
6) What would happen to the magnetic field of a magnet if another magnet was introduced?
A
The magnetic field would decrease
B
Nothing would change
C
The magnetic fields would cancel each other out
D
The magnetic field would increase
7) What is the effect of switching the polarity in an electromagnet?
A
The North and South poles would switch
B
Decreased Magnetism
C
Increased magnetism
D
There would be no effect
8) Which of these items does not require a temporary magnet?
A
Toaster
B
DC Motor
C
Fridge Magnet
D
Maglev Train
9) What is Magnetic Induction?
A
The process of doubling the power of a magnet
B
The process of a magnetic material becoming magnetized
C
The process of a magnetic becoming non-magnetic
D
The process of turning aluminum into steel
10) Which of these is not a type of magnet?
A
Bar Magnet
B
Cast Iron
C
Permanent Magnet
D
Electromagnet
*select an answer for all questions
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