Heavy Duty Truck Systems – Chapter 8 – Lecture Summary & Practice Questions
When an alternator is full-fielded, which of the following temporarily ceases to function? -
correct answer ✔✔C)
voltage regulator
How are the stator windings in a typical truck alternator configured? - correct answer ✔✔B)
delta connection
How many diodes are used in a typical 3-phase, full-rectification truck alternator? - correct
answer ✔✔B)
6
Which of the following sets of voltage range specifications indicates that a typical truck voltage
regulator is functioning properly? - correct answer ✔✔B)
13.5-14.1 volts
Which of the following conditions will shorten the life of batteries? - correct answer ✔✔all of
the above
overcharging,
undercharging,
deep-cycling
What component in an alternator rotates? - correct answer ✔✔A)
rotor
How is field current routed through an alternator? - correct answer ✔✔D)
, through slip rings and the rotor
Which of the following statements about how electrical current flow is induced in an alternator
is correct? - correct answer ✔✔A)
rotating magnetic field induces a voltage into stationary windings
How much current flows through the brushes and slip rings of an alternator? - correct answer
✔✔C)
field current
Which windings in an alternator are connected to the diodes in the rectifier? - correct answer
✔✔B)
stator windings
Which stator windings are connected in series and have a neutral junction? - correct answer
✔✔A)
wye-wound stator
What is the function of the diode trio in an internally regulated truck alternator? - correct
answer ✔✔A)
rectifies the current produced by the field coil
Which of the following defects could result in an undercharged battery? - correct answer ✔✔D)
all of the above
loose belt(s),
defective diode trio,
defective voltage regulator
When an alternator is full-fielded, which of the following temporarily ceases to function? -
correct answer ✔✔C)
voltage regulator
How are the stator windings in a typical truck alternator configured? - correct answer ✔✔B)
delta connection
How many diodes are used in a typical 3-phase, full-rectification truck alternator? - correct
answer ✔✔B)
6
Which of the following sets of voltage range specifications indicates that a typical truck voltage
regulator is functioning properly? - correct answer ✔✔B)
13.5-14.1 volts
Which of the following conditions will shorten the life of batteries? - correct answer ✔✔all of
the above
overcharging,
undercharging,
deep-cycling
What component in an alternator rotates? - correct answer ✔✔A)
rotor
How is field current routed through an alternator? - correct answer ✔✔D)
, through slip rings and the rotor
Which of the following statements about how electrical current flow is induced in an alternator
is correct? - correct answer ✔✔A)
rotating magnetic field induces a voltage into stationary windings
How much current flows through the brushes and slip rings of an alternator? - correct answer
✔✔C)
field current
Which windings in an alternator are connected to the diodes in the rectifier? - correct answer
✔✔B)
stator windings
Which stator windings are connected in series and have a neutral junction? - correct answer
✔✔A)
wye-wound stator
What is the function of the diode trio in an internally regulated truck alternator? - correct
answer ✔✔A)
rectifies the current produced by the field coil
Which of the following defects could result in an undercharged battery? - correct answer ✔✔D)
all of the above
loose belt(s),
defective diode trio,
defective voltage regulator
