Chapter 86 Question and answers already passed 2024/2025
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Course
ACCT
Institution
ACCT
Chapter 86 Question and answers already passed 2024/2025 Chapter 86
The catalyst materials used in a catalytic converter include - correct answer rhodium, palladium, and platinum
A _________________ is an element that starts a chemical reaction but is not consumed in the process. - correct...
Chapter 86
The catalyst materials used in a catalytic converter include - correct answer
✔rhodium, palladium, and platinum
A _________________ is an element that starts a chemical reaction but is not
consumed in the process. - correct answer ✔catalyst
The OBD-II system monitor compares the relative activity of a rear oxygen
sensor to the _________________________ to determine catalytic converter
efficiency. - correct answer ✔precatalytic oxygen sensor
Catalytic converters can be tested for - correct answer ✔restriction and for
efficiency.
What is applied to the ceramic substrate to make the surface porous? -
correct answer ✔Washcoat
Two technicians are discussing catalytic converters. Technician A says that
the exhaust mixture must be at stoictiometric for the best efficiency.
Technician B says that the air-fuel mixture must be leaner than 14.7:1 for best
performance from a three-way catalytic converter. Which technician is
correct? - correct answer ✔Technician A only
A catalytic converter has to be at least how hot before it starts to work? -
correct answer ✔500°F (260°C)
What two primary sensors does the PCM use to check the catalytic converter?
- correct answer ✔Precat and postcat oxygen sensor
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