WorksheetsAlternators & AVR
Total questions: 11
Worksheet time: 9mins
Which of the following is not a part of brushless alternator?
Stator Windings
AVR
Slip rings
Rotating rectifier assembly
RMF stands for (a) .
In a brushed alternator, brushes should contact
stator
rotor
commutator
All the above
In a 3 phase machine, windings should be placed at ___________ degrees.
90
180
270
120
The initial excitation available in an alternator while starting is due to
fully charged batteries
AVR
Governor
residual magnetism
calculate the frequency of a 8 pole alternator rotated at 900 rpm
(a)
AVR provides supply to ________________.
Main stator winding
Exciter stator winding
Main rotor winding
Exciter rotor winding
What is the name of an electrical device that only allows current flow in one direction. Otherwise known as a electrical check valve?
Fuse
Diode
Photocell
Multi-meter
Based on the image above, which statement is true? (Mark all that are true)
The input supply is Alternating Current
The output voltage is Positive voltage
The input supply is Positive Only
The output supply is Direct current
Which of these equipment is not used to test alternator windings?
Odometer
Multimeter
Megger
Continuity tester
Re-Arrange the test procedure:
test exciter stator - test RRA - test Main stator windings - test exciter rotor - test Main rotor windings
(a)
