Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 17, Problem 2ASRQ
Technician A says that the reserve rating of a battery is the amount of steady current that a fully charged battery can supply tor 20 hours without the voltage falling below 10.5 volts. Technician B says that ampere-hour ratings state how many hours the battery’ is capable of supplying 25 amperes. Who is correct?
- Technician A
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Which of the following statements about battery rating is true?
a.The ampere-hour rating is defined as the amount of steady current that
a fully charged battery' can supply for 1 hour at 80o F (26.7o C) without
the cell voltage falling below a predetermined voltage.
b.The cold cranking amps rating represents the number of amps that a fully charged battery can deliver at 0o F(-17.7o C) for 30 seconds
while maintaining a voltage above 9.6 volts for a 12 volt battery.
c.The craking amp rating expresses that number of amperes a battery'
can deliver at 32o F (0o C) for 30 seconds and maintain at least 1.2 volts
percell.
d.The reserve capacity ratng expresses the number of amperes a fully charged battery at 80o F can supply before the battery's voltage
falls below 10.5 volts.
True or False? A fully charged new battery willhave a low conductance reading.
When discussing the reasons why a change from 12 V to 42 V batteries is likely
in the future, Technician A says this will produce an increase in power for an
increased range of accessories. Technician B says this will provide an increase in
power but also an increase in maintenance. Who is right?
1. A only.
2. B only.
3. Both A and B.
4. Neither A nor B.
Chapter 17 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 17 - Define an electrolyte and its role in battery...Ch. 17 - Prob. 2RQCh. 17 - How is a battery leakage test conducted?Ch. 17 - Describe parasitic draw.Ch. 17 - How can you identify the high-voltage system in...Ch. 17 - How many volts are present in a fully charged...Ch. 17 - What is meant by the term specific gravity?Ch. 17 - What causes gassing in a battery?Ch. 17 - List five things that shorten the life of a...Ch. 17 - True or False? All electrochemical batteries have...
Ch. 17 - Prob. 11RQCh. 17 - True or False? A batteny is an electromechanical...Ch. 17 - True or False? The BCI determines battery ratings...Ch. 17 - Which of the following statements about battery...Ch. 17 - Which of the following statements about battery...Ch. 17 - Prob. 1ASRQCh. 17 - Technician A says that the reserve rating of a...Ch. 17 - Technician A says that battery straps should be...Ch. 17 - Technician A says jump-starting a battery can...Ch. 17 - Prob. 5ASRQCh. 17 - Technician A says that before a battery is...Ch. 17 - Technician A says that side post terminals need to...Ch. 17 - A vehicles battery goes dead after sitting for two...Ch. 17 - Technician A always wears safety glasses or...Ch. 17 - While discussing the results of a load test:...
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- Technician A says that battery straps should be used whenever a battery is lifted Technician B says that when a battery is removed, the positive cable should be disconnected first. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardHow many volts are present in a fully charged 12-volt battery?arrow_forwardWhile discussing voltage Technician A says that voltage is the force developed by the attraction of the electrons to protons. Technician B says that the force developed by the attraction of electrons to protons is called electromotive force and it is measured in volts. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- List five things that shorten the life of a battery.arrow_forwardWhich of the following statements about batterytypes is not true?a. Deep cycle batteries are designed to gothrough many charge and discharge cycles.b. A low-maintenance battery is a heavy-dutyversion of a normal lead-acid battery.c. Maintenance-free batteries require externalholes or vent caps.d. In a gel cell battery, gassing is minimized andvents are not needed.arrow_forwardTechnician A says jump-starting a battery can damage electronic components. Technician B says a dead battery should be jump-started instead of recharged. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- True or False? A lab scope is a visual voltmeter that shows voltage over a period of time.arrow_forwardTrue or False? All electrochemical batteries have three major parts: two electrodes or plates, and an electrolyte.arrow_forwardWhile discussing copper wire: Technician A says that if the length of wire is doubled, the resistance between the wire ends is doubled. Technician B says that if the diameter of a wire is doubled, the resistance between the wire ends is doubled. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Technician A fast charges a sulfated battery then reinstalls it in the vehicle. Technician B trickle charges a sulfated battery over 24 hours before reinstalling it. Who is correct? a. A only b. B only c. both A and B d. neither A nor Barrow_forwardElectrical power is measured in A. amperes. B. volts. C. watts. D. ohms.arrow_forwardWhich of the following statements about battery types is not true? Deep cycle batteries are designed to go through many charge and discharge cycles. A low-maintenance battery is a heavy-duty version of a normal lead-acid battery. Maintenance-free batteries require external holes or vent caps. In a gel cell battery, gassing is minimized and vents are not needed.arrow_forward
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