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