
Combustion and Emission Questions
Authored by Jon Ford
Other
9th Grade
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10 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
What can high O2 levels in the exhaust indicate?
A) Rich air-fuel mixture
B) Low combustion efficiency
C) High combustion temperature
D) Complete combustion
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does low NO2 levels suggest about combustion temperature?
A) High combustion temperature
B) Low combustion temperature
C) Complete combustion
D) Perfect air-fuel ratio
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which component can cause high CO levels if malfunctioning?
A) Oxygen sensor
B) Catalytic converter
C) Exhaust manifold
D) Muffler
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
What can cause high HC levels besides misfires?
Proper ignition timing
Faulty spark plugs
Clean air filter
High combustion temperature
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a rich air-fuel mixture mean?
A) Too much air, not enough fuel
B) Too much fuel, not enough air
C) Perfect balance of air and fuel
D) Low combustion temperature
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
What can low compression pressure result in?
High NO2 levels
Low NO2 levels
High CO2 levels
Low HC levels
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can high O2 levels in the exhaust indicate?
Rich air-fuel mixture
Low combustion efficiency
Complete combustion
High combustion temperature
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