PHEP Chapter 7 Flashcards
1
Q
Faraday used Oersted’s principle to do what?
A
Build the worlds first motor
2
Q
What is torque?
A
Twisting or turning force exerted on the loop that causes it to rotate
3
Q
What are the 4 principle parts of a DC motor?
A
Magnetic field, movable conductor, commutator, brushes
4
Q
What does an electric motor do?
A
Transforms electricity into rotary motion to perform useful work
5
Q
What are risers?
A
Raised portion of the commutator segments that connect to the leads
6
Q
What are commutator brushes made of?
A
Carbon and graphite
