Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 25, Problem 6SA
Many control systems have operating modes that can be accessed with a scan tool to control the operation of an output. What are the names of the two most common modes for controlling outputs?
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The control system employs microcontroller to control the variables then it is called as direct digital control system.
Select one:
True
False
A major disadvantage of on/off control is that it cannot work for applications requiring very small changes from the set point (sp)
a. true
b. false
Which is the correct path of information through a control loop?
controller > comparator > measuring device > final control element
comparator > controller > measuring device > final control element
measuring device > controller > comparator > final control element
measuring device > comparator > controller > final control element
Chapter 25 Solutions
Automotive Technology
Ch. 25 - OBD II systems use several modes of operation....Ch. 25 - List the four ways that individual components can...Ch. 25 - Prob. 3SACh. 25 - When an engine is running lean, the voltage signal...Ch. 25 - List six steps involved in performing a visual...Ch. 25 - Many control systems have operating modes that can...Ch. 25 - True or False? A bad ground can cause an increase...Ch. 25 - True or False? An A/F ratio sensor can be tested...Ch. 25 - Which of the following statements about zirconium...Ch. 25 - A system may fail the catalyst monitor test for...
Ch. 25 - A defective LAT sensor or circuit may cause the...Ch. 25 - Which of the following is the least likely cause...Ch. 25 - Technician A says that an oxygen sensor can be a...Ch. 25 - Prob. 2ASRQCh. 25 - While discussing ECT sensor diagnosis: Technician...Ch. 25 - While discussing Hall-effect vehicle speed sensor...Ch. 25 - While discussing TP sensor diagnosis: Technician A...Ch. 25 - While diagnosing the cause of a hard starting...Ch. 25 - While discussing testing OBD II system components:...Ch. 25 - When testing a frequency varying MAF: Technician A...Ch. 25 - Technician A says that a faulty MAF sensor can...Ch. 25 - While discussing the MIL on OBD 11 systems:...
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- An analog control signal A. has an infinite number of control steps. B. is very limited in the number of control steps. C. makes a hissing noise when the position is changed. D. is not used in this industry.arrow_forwardan automatic door mechanism where when a specific sensor on top detects a user approaching, where the doors should open and the door is known to be open or closed through the limit switches found below, LS1 and LS2. draw flowchart and ladder diagram.arrow_forwardTechnician A says that some types of voltage sensors provide input to the computer by modifying or controlling a constant, predetermined voltage signal. Technician B says that a coolant temperature sensor is a voltage-generating sensor. Who is correct?arrow_forward
- (a) The feeder-selector device at one of the workstations of an assembly machine has a feed rate of 56 components/min and provides a throughput of one part in five. The ideal cycle time of the assembly machine is 6 sec. The low-level sensor on the feed track is set at 10 components, and the high-level sensor is set at 25 components. (a) How long will it take for the supply of components to be depleted from the high-level sensor to the low-level sensor once the feeder-selector device is turned off? (b) How long will it take for the components to be resupplied from the low-level sensor to the high-level sensor, on average, after the feeder-selector device is turned on? (c) What are the time proportions that the feeder-selector device is turned on and turned off?arrow_forward8. A system that has the ability to start, regulate, and stop a process to get the desired output is called.... a. control systemb. Manual controlc. strain sensorsd. Control chaine. digital signalarrow_forward1. Ward Leonard method is ___________a) Armature control methodb) Field control methodc) Combination of armature control method and field control methodd) Totally different from armature and field control methodarrow_forward
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