M3.18/3.12 Flashcards
1
Q
What is a electric motor?
A
Is a device that changes electrical power to mechanical energy a drive a load
2
Q
Can electrical motors be AC and DC?
A
Yes, but AC motors are preferred as they have a higher power to weight ratio
3
Q
What are the two major parts of a motor?
A
- the stator
- the rotor
4
Q
What does the stator of a motor do?
A
It is used to produce a magnetic field in which the rotors can move
5
Q
What does the rotor in motor do?
A
It spins in the magnetic field that has been produced by the stator
6
Q
Why are three-phase asynchronous motors so good?
A
- reliable
- low maintenance
- low manufacturing cost
7
Q
True or false that the rotational speed of the rotor is always lower than the rotational speed of rotating field?
A
TRUE!!!!!
