Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 19, Problem 10ASRQ
To determine
Whether Technician A or Technician B is correct.
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While discussing what is indicated by a vehicle’s charge indicator: Technician A says that any positive reading on an ammeter shows that the generator is in working condition. Technician B says that if the voltmeter reading does not increase immediately after starting the engine, the battery is bad. Who is correct?
Technician A
Technician B
Both A and B
Neither A nor B
Technician A says that many vehicles use an AC generator as the charging unit. Technician B says that all vehicles use an alternator as the charging unit. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B
Technician A says that many newer charging systems do not have a separate voltage regulator. Technician B says that most late-model charging systems are computer regulated through the ground of the field. Who is correct?
Chapter 19 Solutions
Automotive Technology
Ch. 19 - To protect electronic circuits, some voltage...Ch. 19 - What is the purpose of the diodes in the...Ch. 19 - How does a voltage regulator regulate the voltage...Ch. 19 - Describe the differences between an overrunning...Ch. 19 - What would happen to the output of an AC generator...Ch. 19 - Describe the basic difference between a DC motor...Ch. 19 - True or False? A faulty voltage regulator can only...Ch. 19 - True or False? A generator that is not producing...Ch. 19 - Prob. 1MCCh. 19 - What part of the AC generator is the rotating...
Ch. 19 - Which type of stator winding has two windings in...Ch. 19 - Slip rings and brushes. mount on the rotor shaft...Ch. 19 - The alternating current produced by the AC...Ch. 19 - Prob. 6MCCh. 19 - Prob. 7MCCh. 19 - Technician A says that the waveform produced by an...Ch. 19 - While discussing what is indicated by a vehicles...Ch. 19 - When checking the charging system on a late-model...Ch. 19 - Prob. 4ASRQCh. 19 - Technician A says generator output should be...Ch. 19 - Technician A says that many newer charging systems...Ch. 19 - While diagnosing rapid and severe belt wear after...Ch. 19 - Prob. 8ASRQCh. 19 - Prob. 9ASRQCh. 19 - Prob. 10ASRQ
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- True or False? The air bag diagnostic monitor supplies back-up power to the air bag module in the event that the battery or cables are damaged during the accident.arrow_forwardAn engine overheats in traffic but is fine when driving: Technician A says a faulty thermostat may be the cause. Technician B says the fan clutch could be the cause. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhen diagnosing a no-crank no-start condition, no voltage is present at the S terminal of the solenoid while attempting to crank the engine. Technician A says a faulty starter motor is the cause. Technician B says a shorted safety switch is the cause. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- While checking for conditions that might cause coolant electrolysis: Technician A places the positive lead of a voltmeter into the coolant and connects the negative lead to a ground. Technician B checks for the presence of voltage in the coolant with the ignition off. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhile discussing IAC motor removal, service, and replacement: Technician A says that throttle body cleaner may be used to clean the IAC motor internal components. Technician B says that on some vehicles, IAC motor damage occurs if the pintle is extended more than specified during installation. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhile diagnosing the control system of a BEV: Technician A begins by checking the voltage of the auxiliary battery. Technician B inspects all fuses, fusible links, wiring harness, connectors, and ground in the low-voltage circuit. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forward
- While discussing ignition systems: Technician A says that an ignition system must supply high-voltage surges to the spark plugs. Technician B says that the system must maintain the spark long enough to burn all of the air-fuel mixture in the cylinder. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhile discussing inductive charging technician a says most current begs use this system because it's safe technician b says this method requires that a weatherproof paddle be inserted into the vehicles charge port who is correct?arrow_forwardWhile discussing ignition timing control in EI systems: Technician A says that when the engine coolant temperature is low, the timing is retarded until normal operating temperature is reached. Technician B says that the PCM will retard the timing during EGR operation. Who is correct? Technician Ac.Both A and B b. Technician B d. Neither A nor Barrow_forward
- How do most electronic ignition systems differ? number of spark plugs the use of CMP and CKP sensors number of transistors the use of a distributorarrow_forwardWhich of the following is false? The air bag igniter assembly is a spark plug-type device with two pins that current must jump across. The air bag igniter assembly creates a spark that ignites a canister of gas generating zerconic potassium perchlorate. The air bag igniter assembly is housed in the module assembly. None of the above.arrow_forwardWhile discussing working on hybrid vehicles: Technician A says to make sure that the high- voltage system is shut down and isolated from the vehicle before working near or with any high-voltage component. Technician B says that when working on or near the high-voltage system , even when it is de - powered , always use insulated tools. Who is correct ?arrow_forward
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