Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 19, Problem 8ASRQ
To determine
Whether Technician A or Technician B is correct.
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Technician A says that a 12-volt light bulb that draws 12 amps has a power output of 1 watt. Technician B says that a motor that has 1 ohm of resistance has a power rating of 144 watts if it is connected to a 12-volt battery. Who is correct?
Expert Answer
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?
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
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? A faulty voltage regulator can only cause a no-charge condition.arrow_forwardTrue or False? A zero reading on an ohmmeter means the circuit or component is open.arrow_forwardWhile diagnosing the location of a wire-to-wire short: Technician A checks the wiring of the affected circuits for signs of burned insulation and melted conductors. Technician B checks common connectors shared by the two affected circuits. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- Which type of resistor is commonly used in automotive circuits? a. Fixed value b. Stepped c. Variable d. All of the abovearrow_forwardWhile checking an A/C compressor clutch coil clamping diode with a DMM, the meter shows infinite resistance when the diode is measured in both directions: Technician A says that the diode is open. Technician B says that all diodes should behave this way until a specified voltage is applied to them. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_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_forward
- While discussing electric motors: Technician A says that when there is high CEMF, there will be high current flow. Technician B says that if the reluctance of an electromagnet increases, its field strength increases. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forwardWhich of the following is the purpose of fail-safe circuits? O Fail-safe circuits are designed to protect electric motors against voltage surge O All of these are true O Fail-safe circuits are designed to provide overload protection for system components O Fail-safe circuits are designed to maintain constant current in electric motor coilsarrow_forwardHow 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_forward
- True or False? A batteny is an electromechanical device.arrow_forwardTrue or False? A generator that is not producing voltage or current may have an open stator winding.arrow_forwardhile discussing NTC thermistors; Technician A says that some systems use this type of thermistor as a protection device. Technician B says that when there is high current in a circuit, the resistance of the thermistor increases and causes a decrease in current flow. Who is correct?arrow_forward
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