DC Motor Questions
Authored by Lisa Thompson
Science
University
NGSS covered
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How does a split ring commutator work?
Swaps the contact evert full turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil do not experience a force in the same direction.
Swaps the contact evert half turn, so that the left-hand and right-hand arms of the coil always experience a force in the same direction.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which part (s) of the DC motor connect the power supply to the split-ring and coil?
Carbon brushes
Magnets
Commutator
Slip rings
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
The motion in DC motor can be increased by the following factors... (you may choose more than one)
Using a stronger magnet
Increasing the potential difference
Increasing the current
Increasing the number of turns on the coil
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
NGSS.HS-PS3-3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What it is?
Armature
Commutator
Brush
Magnet
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which rule can be used to work out which way a coil of wire rotates in a motor?
Fleming's left-hand rule
Fleming's right-hand rule
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Give two ways you can reverse the direction of a basic dc motor?
Reverse the current
Keep the current the same
Reverse the magnetic field
Keep the magnetic field the same
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The operation of Commutator in DC Motor is
to convert dc to ac
to convert ac to dc
to convert fixed dc to variable dc
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-3
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