Question 1

All of the following statements are true EXCEPT:

Accepted Answer

A)  the voltage regulator controls the current passing through the windings of the electromagnetic field in the rotor. 
B)  the voltage regulator can be located on either the ground side or the positive side of the field circuit. 
C)  electronic voltage regulation requires no moving parts, so it can cycle electronically between 10 and 7,000 times per second. 
D)  turning the AC generator rapidly on and off to achieve a precise output is called voltage width modulation. 
A)  the voltage regulator controls the current passing through the windings of the electromagnetic field in the rotor. 
B)  the voltage regulator can be located on either the ground side or the positive side of the field circuit. 
C)  electronic voltage regulation requires no moving parts, so it can cycle electronically between 10 and 7,000 times per second. 
D)  turning the AC generator rapidly on and off to achieve a precise output is called voltage width modulation. D

Question 2

he charging system works hardest after the engine is first started as well as when all electrical options are operating.

Accepted Answer

A) True 
 B)False  True

Question 3

An AC generator produces ____________________.

Accepted Answer

alternating current

Question 4

The component that MOST-Likely controls the current passing through the windings of the electromagnetic field in the rotor is the:

Accepted Answer

A)  diode 
B)  stator 
C)  voltage regulator 
D)  heat sink 
A)  diode 
B)  stator 
C)  voltage regulator 
D)  heat sink

Question 5

What is an advantage of a voltmeter?

Accepted Answer

One advantage to a voltmeter i

Question 6

A(n) ____________________ resembles an electric motor, having a stationary magnetic field with an armature output winding spinning inside.

Accepted Answer

The answer of A(n) ____________________ resembles an electric motor, having...

Question 7

A ____ is a one-way check valve for electricity.

Accepted Answer

A)  slip ring 
B)  heat sink 
C)  diode 
D)  stator 
A)  slip ring 
B)  heat sink 
C)  diode 
D)  stator

Question 8

When there is a charging system problem, which of the following systems is LEAST-Likely to indicate a problem?

Accepted Answer

A)  Heat sink 
B)  Warning light 
C)  Ammeter 
D)  Voltmeter 
A)  Heat sink 
B)  Warning light 
C)  Ammeter 
D)  Voltmeter

Question 9

While having a discussion, Technician A says that when charging system voltage is low and accessories are loading the system, the regulator increases the AC generator current output. Technician B says that if system voltage is normal and there is a heavy accessory load, the AC generator will run the accessories with little drain on the battery. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B 
A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B

Question 10

The stator fits in the frame of the AC generator, between the front and rear halves of the cast aluminum housing.

Accepted Answer

A) True 
 B)False

Question 11

When the rotor spins, an alternating north/south polarity is created (AC current). This is called ____________________.

Accepted Answer

The answer of When the rotor spins, an alternating north/south...

Question 12

All of the following statements are true EXCEPT:

Accepted Answer

A)  when a stator is wound with a delta connection, the leads of the windings are connected together in series. 
B)  a wye (Y) winding is used in high-output AC generator. 
C)  a delta winding can put out about one-third more current at highway speeds than a Y-wound stator. 
D)  because it is about one-third less efficient at idle speed, there is a problem with delta-wound AC generators. 
A)  when a stator is wound with a delta connection, the leads of the windings are connected together in series. 
B)  a wye (Y) winding is used in high-output AC generator. 
C)  a delta winding can put out about one-third more current at highway speeds than a Y-wound stator. 
D)  because it is about one-third less efficient at idle speed, there is a problem with delta-wound AC generators.

Question 13

When current passes through a coiled wire, a magnetic field builds up around the wire. This is called a(n) ____________________.

Accepted Answer

The answer of When current passes through a coiled wire,...

Question 14

Which of the following statements is LEAST-Likely true?

Accepted Answer

A)  The typical electrical requirements of a 1970 automobile amounted to about 500 watts. 
B)  Today, it is unusual to find 150-amp AC generators on passenger vehicles. 
C)  Alternators (AC generators) on 1970s vehicles typically put out from 35 to 50 amps. 
D)  As vehicles evolve, electrical demand is projected to increase to more than double today's level, that is, to 10,000 watts or more. 
A)  The typical electrical requirements of a 1970 automobile amounted to about 500 watts. 
B)  Today, it is unusual to find 150-amp AC generators on passenger vehicles. 
C)  Alternators (AC generators) on 1970s vehicles typically put out from 35 to 50 amps. 
D)  As vehicles evolve, electrical demand is projected to increase to more than double today's level, that is, to 10,000 watts or more.

Question 15

What is the purpose of an alternator fan?

Accepted Answer

The cooling fan draws air into

Question 16

While having a discussion, Technician A says that voltage will be closer to 14.4 to 14.8 volts when the system is very cold and closer to 13.5 volts when the system is hot. Technician B says that voltage is closer to 13.5 volts when the system is very cold and closer to 15.5 volts when the system is hot. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B 
A)  A only 
B)  B only 
C)  Both A and B 
D)  Neither A nor B

Question 17

The ____ is a rotating electromagnetic field, and as it spins, its magnetic field cuts across the windings of the stator.

Accepted Answer

A)  commutator 
B)  rotor 
C)  slip ring 
D)  diode 
A)  commutator 
B)  rotor 
C)  slip ring 
D)  diode

Question 18

Carbon brushes that ride on the slip rings provide electricity to the field coil.

Accepted Answer

A) True 
 B)False

Question 19

The ____________________ includes an alternating current (AC) generator (sometimes called an alternator), a voltage regulator, a dash light or gauge, and related wiring.

Accepted Answer

The answer of The ____________________ includes an alternating current (AC)...

Question 20

What are some of the drawbacks of the generator when compared to the alternator?

Accepted Answer

- For a generator to have high output, m

Exam 30: Charging System Fundamentals

All of the following statements are true EXCEPT:

he charging system works hardest after the engine is first started as well as when all electrical options are operating.

An AC generator produces ____________________.

The component that MOST-Likely controls the current passing through the windings of the electromagnetic field in the rotor is the:

What is an advantage of a voltmeter?

A(n) ____________________ resembles an electric motor, having a stationary magnetic field with an armature output winding spinning inside.

A ____ is a one-way check valve for electricity.

When there is a charging system problem, which of the following systems is LEAST-Likely to indicate a problem?

The stator fits in the frame of the AC generator, between the front and rear halves of the cast aluminum housing.

When the rotor spins, an alternating north/south polarity is created (AC current). This is called ____________________.

All of the following statements are true EXCEPT:

When current passes through a coiled wire, a magnetic field builds up around the wire. This is called a(n) ____________________.

Which of the following statements is LEAST-Likely true?

What is the purpose of an alternator fan?

The ____ is a rotating electromagnetic field, and as it spins, its magnetic field cuts across the windings of the stator.

Carbon brushes that ride on the slip rings provide electricity to the field coil.

The ____________________ includes an alternating current (AC) generator (sometimes called an alternator), a voltage regulator, a dash light or gauge, and related wiring.

What are some of the drawbacks of the generator when compared to the alternator?

Introduction to the Automobile

Automotive Careers and Technician Certification

Shop Safety

Shop Management, Service Records, and Parts

Locating Service Information and Specifications

Measuring Tools and Systems

Hardware, Fasteners, Drills, and Thread Repair

Shop Tools

General Shop Equipment

Cleaning Equipment and Methods

Lifting Equipment and Air Compressors

Engine Lubrication

Underhood and Body Inspection Car on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Advanced Transportation Technologies

Engine Size and Measurements

Engine Upper End

Engine Lower End and Lubrication System Theory

Cooling System Theory

Cooling System Service

Automotive Belts

Automotive Hoses

Automotive Plumbing: Tubing and Pipe

Basic Electrical System Theory and Repairs

Battery Fundamentals

Battery Service

Starting System Fundamentals

Starting System Service

Charging System Service

Lighting and Wiring Fundamentals

Lighting and Wiring Service

Safety, Security, Comfort Systems, and Electrical Accessories

Heating and Air Conditioning Fundamentals

Heating and Air Conditioning Service

Ignition System Fundamentals

Ignition System Service

Fuels and Alternative Fuels

Fuel System Fundamentals

Fuel System Service

Intake and Exhaust Systems, Turbochargers and Superchargers

Emission Control System Fundamentals

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emissions and On-Board Diagnostics Odb

Diagnosing Engine Performance Problems

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing, Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valvetrain

Engine Diagnosis and Service: Block, Crankshaft, Bearings, and Lubrication System

Engine Diagnosis and Service: Piston, Piston Rings, Connecting Rod, Engine Balancing

Ordering Parts, Short and Long Blocks, Engine Assembly

Engine Installation, Break In, and In-Chassis Repairs

Brake Fundamentals

Brakes Service

Anti-Lock Brakes Traction and Stability Control

Bearings, Seals, and Greases

Tire and Wheel Theory

Tire and Wheel Service