Generators Flashcards
1
Q
What are three factors which affect the EMF produced by a generator?
A
- Velocity of conductors through the magnetic field.
- Flux density of the magnetic field.
- Length of conductor through the magnetic field.
2
Q
“_____” are used to generate AC voltage, whereas a “_____” is used to generate DC voltage.
A
Slip rings.
Commutator or split ring.
3
Q
How is generated current transferred to a circuit?
A
Through the brushes.
4
Q
What makes up the magnetic circuit of a generator?
A
- Field yoke
- Pole cores
- Armature
- Air gap.
5
Q
What makes up the electrical circuit of a generator?
A
- Field coils
- Armature windings
- Brushes
6
Q
When is the greatest EMF produced in a generator?
A
When the conductor cuts lines of force at 90°.
7
Q
What is the main function of the field yoke?
A
To provide a low reluctance path for the magnetic circuit.
It also provides protection for the generator’s components.
