Electronics Robotics Final Review 1 (Semester 2) Question Preview (ID: 47332)
ER.
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Magnetic materials are known as:
a) Solid materials
b) Heavy materials
c) Ferrous materials
d) Electromagnetic materials
Which of these metals is magnetic?
a) Gold
b) Silver
c) Mild Steel
d) Aluminium
Which of these is NOT required to make an electromagnet?
a) Source of current
b) Iron Core
c) bar magnet
d) Wire Coil
Which of these is NOT a factor that effects electromagnet strength?
a) Temperature of the room
b) Number of coils
c) Amount of current
d) Type of material used for core
Ferrous metals have large amounts of_______
a) Copper
b) Iron
c) Amps
d) Aluminium
What would happen to the magnetic field of a magnet if another magnet was introduced?
a) The magnetic field would increase
b) The magnetic fields would cancel each other out
c) The magnetic field would decrease
d) Nothing would change
What is the effect of switching the polarity in an electromagnet?
a) Increased magnetism
b) Decreased Magnetism
c) There would be no effect
d) The North and South poles would switch
Which of these items does not require a temporary magnet?
a) Maglev Train
b) DC Motor
c) Toaster
d) Fridge Magnet
What is Magnetic Induction?
a) The process of a magnetic becoming non-magnetic
b) The process of a magnetic material becoming magnetized
c) The process of turning aluminum into steel
d) The process of doubling the power of a magnet
Which of these is not a type of magnet?
a) Electromagnet
b) Permanent Magnet
c) Cast Iron
d) Bar Magnet
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