Question 1

Alternators induce voltage by rotating which of these?

Accepted Answer

A)  Magnetic field inside a fixed conductor
B)  Conductor around a fixed stator
C)  Diodes inside a magnetic field
D)  Stator inside a magnetic fieldE) A) and B)
F) None of the above

Question 2

Electronic voltage regulators use a temperature-sensitive resistor in the regulator circuit. This resistor, called a thermistor, provides lower resistance as the temperature ________.

Accepted Answer

A)  Stays the same
B)  Increases
C)  Decreases
D)  DoublesE) A) and B)
F) A) and D)

Question 3

A duty cycle of 90% means the circuit is off most of the time.

Accepted Answer

A) True 
 B)False

Question 4

How much current flows through the alternator brushes?

Accepted Answer

A)  25 to 35 A, depending on the vehicle
B)  2-5
C)  10 to 15 A
D)  All of the alternator output flows through the brushesE) A) and C)
F) B) and C)

Question 5

Which of these facts is correct about a delta-wound stator?

Accepted Answer

A)  The circuit diagram looks like a parallelogram
B)  No ground connection
C)  No neutral junction
D)  The windings always form a series circuitE) C) and D)
F) All of the above

Question 6

Which of these is TRUE about an alternator with an overrunning pulley?

Accepted Answer

A)  Replacement pulley must be the overrunning type
B)  It can use a conventional replacement pulley
C)  Both A and B
D)  Neither A nor BE) C) and D)
F) A) and B)

Question 7

Some alternators are cooled by engine coolant.

Accepted Answer

A) True 
 B)False

Question 8

An alternator stator with three windings usually has how many diodes?

Accepted Answer

A)  2
B)  6
C)  4
D)  8E) A) and D)
F) C) and D) B

Question 9

The GM electrical power management system has 3 modes of operation.

Accepted Answer

A) True 
 B)False

Question 10

Which of these components is the stator?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) None of the above
F) A) and C) D

Question 11

Technician A says that a magnetic field is created in the alternator rotor. Technician B says that alternator output is increased if the speed of the alternator is decreased. Who is right?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) All of the above
F) A) and D)

Question 12

One horsepower is equal to ________ watts.

Accepted Answer

A)  1050
B)  746
C)  500
D)  None of theseE) B) and C)
F) All of the above

Question 13

On a vehicle using an electrical power management system (EPM) , how is the current to the battery measured?

Accepted Answer

A)  With an in-line ammeter
B)  By use of a duty-cycle sensor
C)  With a Hall effect sensor
D)  By using a custom voltmeterE) B) and D)
F) All of the above

Question 14

Technician A says that current is created in the stator windings of an alternator. Technician B says that the voltage regulator controls the current flow through the rotor. Who is right?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) B) and C)
F) A) and B) C

Question 15

Current for the rotor flows through the brushes to the ________.

Accepted Answer

A)  Stator
B)  Slip rings
C)  Regulator
D)  RotorE) A) and B)
F) B) and C)

Question 16

The output diodes in an alternator are mounted to which of these components?

Accepted Answer

A)  Rotor
B)  Stator
C)  Housing
D)  Slip ringsE) A) and D)
F) C) and D)

Exam 54: Charging System

Alternators induce voltage by rotating which of these?

Correct Answer
verified

Electronic voltage regulators use a temperature-sensitive resistor in the regulator circuit. This resistor, called a thermistor, provides lower resistance as the temperature ________.

Correct Answer
verified

A duty cycle of 90% means the circuit is off most of the time.

Correct Answer
verified

How much current flows through the alternator brushes?

Correct Answer
verified

Which of these facts is correct about a delta-wound stator?

Correct Answer
verified

Which of these is TRUE about an alternator with an overrunning pulley?

Correct Answer
verified

Some alternators are cooled by engine coolant.

Correct Answer
verified

An alternator stator with three windings usually has how many diodes?

Correct Answer
verified
B

The GM electrical power management system has 3 modes of operation.

Correct Answer
verified

Which of these components is the stator?

Correct Answer
verified
D

Technician A says that a magnetic field is created in the alternator rotor. Technician B says that alternator output is increased if the speed of the alternator is decreased. Who is right?

Correct Answer
verified

One horsepower is equal to ________ watts.

Correct Answer
verified

On a vehicle using an electrical power management system (EPM) , how is the current to the battery measured?

Correct Answer
verified

Technician A says that current is created in the stator windings of an alternator. Technician B says that the voltage regulator controls the current flow through the rotor. Who is right?

Correct Answer
verified
C

Current for the rotor flows through the brushes to the ________.

Correct Answer
verified

The output diodes in an alternator are mounted to which of these components?

Correct Answer
verified

Exam 54: Charging System

Alternators induce voltage by rotating which of these?

Correct AnswerverifiedShow Answer

Electronic voltage regulators use a temperature-sensitive resistor in the regulator circuit. This resistor, called a thermistor, provides lower resistance as the temperature ________.

Correct AnswerverifiedShow Answer

A duty cycle of 90% means the circuit is off most of the time.

Correct AnswerverifiedShow Answer

How much current flows through the alternator brushes?

Correct AnswerverifiedShow Answer

Which of these facts is correct about a delta-wound stator?

Correct AnswerverifiedShow Answer

Which of these is TRUE about an alternator with an overrunning pulley?

Correct AnswerverifiedShow Answer

Some alternators are cooled by engine coolant.

Correct AnswerverifiedShow Answer

An alternator stator with three windings usually has how many diodes?

Correct AnswerverifiedB

The GM electrical power management system has 3 modes of operation.

Correct AnswerverifiedShow Answer

Which of these components is the stator?

Correct AnswerverifiedD

Technician A says that a magnetic field is created in the alternator rotor. Technician B says that alternator output is increased if the speed of the alternator is decreased. Who is right?

Correct AnswerverifiedShow Answer

One horsepower is equal to ________ watts.

Correct AnswerverifiedShow Answer

On a vehicle using an electrical power management system (EPM) , how is the current to the battery measured?

Correct AnswerverifiedShow Answer

Technician A says that current is created in the stator windings of an alternator. Technician B says that the voltage regulator controls the current flow through the rotor. Who is right?

Correct AnswerverifiedC

Current for the rotor flows through the brushes to the ________.

Correct AnswerverifiedShow Answer

The output diodes in an alternator are mounted to which of these components?

Correct AnswerverifiedShow Answer

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B

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D

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C

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