Question 1

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

Accepted Answer

electromagnet

Question 2

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 B

Question 3

An AC generator produces ____________________.

Accepted Answer

alternating current

Question 4

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

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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 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

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 9

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 10

What is the purpose of an alternator fan?

Accepted Answer

The cooling fan draws air into

Question 11

All of the following statements are true EXCEPT:

Accepted Answer

A) the powertrain control module (PCM), or 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 powertrain control module (PCM), or 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.

Question 12

An alternator is an electronic component that only conducts electricity when a certain voltage is reached.

Accepted Answer

A) True 
 B)False

Question 13

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 14

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

Accepted Answer

- For a generator to have high output, m

Question 15

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 16

What are the disadvantages of an ammeter?

Accepted Answer

One disadvantage to the ammeter is that

Question 17

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 18

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 19

What is the difference between an AC generator and a generator?

Accepted Answer

In an AC generator, an electromagnet pas

Question 20

The component MOST-Likely to be used to help dissipate the heat that occurs as electrons try to pass the diode is the:

Accepted Answer

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

Exam 30: Charging System Fundamentals

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

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

An AC generator produces ____________________.

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

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

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

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

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

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

What is the purpose of an alternator fan?

All of the following statements are true EXCEPT:

An alternator is an electronic component that only conducts electricity when a certain voltage is reached.

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

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

What are the disadvantages of an ammeter?

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

Which of the following statements is LEAST-Likely true?

What is the difference between an AC generator and a generator?

The component MOST-Likely to be used to help dissipate the heat that occurs as electrons try to pass the diode is the:

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 Vehicle on Ground

Undercar Inspection and Service

Introduction to the Engine

Engine Classifications and Types

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

Petroleum Fuels and Alternative Fuel Technologies

Fuel System Fundamentals, Gasoline and Diesel

Fuel System Service

Intake and Exhaust Systemsturbochargers and Superchargers

Emission Control System Fundamentals, Gasoline and Diesel

Emission Control System Service

Electronics and Computer Systems Fundamentals

Electronics and Computer Systems Service

Advanced Emission and On-Board Diagnostics Obd

Diagnosing Engine Performance Problems

Diagnosing Engine Mechanical Problems

Engine Removal and Disassembly

Engine Sealing Gaskets, Fastener Torque

Engine Diagnosis and Service: Cylinder Head and Valve Train

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

Brake Service

Antilock Brakes, Traction, and Stability Control

Bearings, Seals, and Greases

Tire and Wheel Theory