10 Questions
Where are the field windings typically located in an alternator?
On the rotor
Which type of rotor winding is commonly used with high-speed prime movers like steam or gas turbines?
Non-salient pole type rotor windings
How is the DC power supplied to the field circuit on the rotor of a synchronous generator?
Via slip rings and brushes
What is the purpose of slip rings in a synchronous machine?
To connect the rotor winding to an external DC voltage source
What is a major disadvantage of using slip rings and brushes in synchronous machines?
They can cause significant power losses due to brush voltage drop
How do brushless exciters differ from machines that use slip rings and brushes for excitation in synchronous machines?
Brushless exciters do not rely on slip rings and brushes for excitation
What is the part of a generator that produces the magnetic field called?
Field
In which type of alternator does the armature rotate while the field poles stay stationary?
Revolving - armature Type
What is the function of slip rings in an alternator?
To connect the alternator to the load
Why is the rotating armature typically found in alternators of low power rating?
To avoid issues at high power levels
Learn about the operating principle of revolving-field type slip rings, which are metal rings encircling the shaft of a machine but insulated from it. This quiz explores how DC rotor winding is connected to slip rings and the role of brushes in conducting electricity without wearing down the rings.
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