untitled
Presentation
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Practice Problem
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Hard
Andrea Strommen
FREE Resource
39 Slides • 22 Questions
1
2
3
Multiple Choice
When the engine is not running, the battery powers the electrical system.
True
False
4
5
Multiple Choice
"While discussing automotive charging systems, Technician A says the ignition switch is considered a component of the charging system. Technician B says the alternator belt is considered a component of the charging system. Who is right?
Tech A
Tech B
Both
Neither
6
7
8
9
Multiple Choice
The brush holder is made of an insulating material.
True
False
10
Multiple Choice
Alternator bearings are packed with grease.
False
True
11
12
Multiple Choice
Technician A says an alternator’s stator is a stationary set of windings. Technician B says an alternator’s stator is surrounded by the rotor. Who is right?
Tech A
Tech B
Both
Neither
13
14
Multiple Choice
Technician A says alternator slip rings are mounted on the stator shaft to feed current into the stator windings. Technician B says alternator brushes ride on the slip rings to make a sliding electrical connection. Who is right?
Tech A
Tech B
Both
Neither
15
16
17
18
19
20
Multiple Choice
Technician A says an automotive charging system’s voltage output is equal to battery voltage. Technician B says a charging system’s voltage output changes as the electric load changes. Who is right?
Tech A
Tech B
Both
Neither
21
Multiple Choice
A diode controls electricity by allowing it to flow in one direction only.
True
False
22
23
Multiple Choice
Technician A says an alternator capacitor helps prevent radio noise. Technician B says an alternator capacitor helps protect the rectifying diode from voltage spikes. Who is right?
Tech A
Tech B
Both
Neither
24
25
26
Multiple Choice
On hybrid vehicles, the alternator is replaced with a motor-generator.
True
False
27
28
29
Multiple Choice
A charge indicator light comes on when the charging system voltage is too low.
False
True
30
Multiple Choice
An ammeter measures the charging system voltage output.
True
False
31
Auto Electricity
and Electronics
Presentations for PowerPoint
32
Battery Technology
12
Chapter
33
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Operates electrical systems during engine cranking and starting
• Supplies electric power for accessories
• Helps provide electricity when current demands exceed alternator
output limit
• Smoothes current through electrical systems
• Stores energy for extended periods
Battery Function
34
Multiple Choice
A battery can feed electricity into the rest of the electrical system when necessary.
False
True
35
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Electrochemical device
• Stores and produces electric current and voltage
• Conventional battery: lead-acid battery
Automotive Battery Construction
36
Multiple Choice
Technician A says an automotive battery produces direct current. Technician B says an automotive battery is an electromechanical device. Who is right?
Tech A
Tech B
Both
Neither
37
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Group of cells that generate electric charge
• Battery cell
• Electrodes
12-Volt Battery
38
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Positive plates: lead peroxide (PbO2)
• Negative plates: sponge lead
• Electrolyte (battery acid)
• Separators
Battery Cell Construction
39
Multiple Choice
Positive plates are made of lead peroxide.
False
True
40
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Calcium or antimony added to positive plates
• Increases performance
• Decreases gassing
• Plate strap connects battery plates
• Battery element
Battery Cell Construction (cont.)
41
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Electrolyte must never come in contact with your skin or eyes.
Sulfuric acid is a very powerful corrosive substance.
• The sulfuric acid in the electrolyte can cause serious skin burns or
even permanent blindness.
• Hydrogen gas can collect at the top of batteries. If this gas is
exposed to a flame or spark, it can explode.
Warning
42
Multiple Choice
Battery electrolyte is made of sulfuric acid and hydrogen.
True
False
43
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
Battery Posts and Terminals
44
Multiple Choice
The polarity of side terminal batteries is marked by + and – signs on the battery case.
True
False
45
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Battery charge indicator
• Also called hydrometer
• Uses specific gravity
• Battery tray and retainer
Other Battery Parts
46
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Connect terminals to vehicle electrical system
• Positive cable (red)
• Fastens to starter solenoid
• Negative cable (black)
• Connects to ground
• Body ground wire
Battery Cables
47
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
Battery Junction Block
48
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Battery converts chemical energy to electrical energy
Battery Discharge
49
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Apply slightly higher voltage to positive terminal
• Electrons flow back through battery
• Restores chemicals
Charging a Discharged Battery
50
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
Battery Cell Discharging
51
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
Battery Cell Charging
52
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Depends on number of cells
• Each cell = 2.1 volts (rounded to 2 volts)
• Most vehicle batteries have 6 cells, or 12 volts
• Diesels may have 2 batteries wired in parallel
Battery Voltage
53
Multiple Choice
Technician A says each cell in a 12-volt automotive battery produces 2.1 volts. Technician B says battery voltage depends on the number of cells.
Tech A
Tech B
Both
Neither
54
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
Dual Batteries for Diesel Engine
55
Multiple Choice
A diesel engine may have two batteries wired in series.
False
True
56
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
Battery Temperature and Efficiency
57
Multiple Choice
As battery temperature drops, battery power drops.
True
False
58
Multiple Choice
A battery has a harder time starting a cold engine because the oil is thicker than it is when the engine is hot.
True
False
59
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Wet-charged battery
• Dry-charged battery
• Maintenance-free battery
• Gel battery
• Absorbed glass mat battery (AGM battery)
Types of Lead-Acid Batteries
60
Copyright Goodheart-Willcox Co., Inc. May not be posted to a publicly accessible website.
• Cold cranking amps (CCA)
• Watt rating
• Reserve capacity (RC)
Battery Ratings
61
Multiple Choice
Modern batteries need to have water added only about every six months.
True
False
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