Engine performance CH 71 Exam
Questions & Answers (Grade A+)
Technician A says that coolant circulates through some intake
manifolds to help warm them up.
Technician B says that some intake manifolds use an electric heater
grid to warm up the intake air.
Who is correct? -
correct answer ✅Both Technician A and Technician B
Which of the following is one of the functions of an air cleaner? -
correct answer ✅Muffling the noise of the intake pulses
Technician A says that ducting can be made of hardened plastic
with flexible rubber couplings to absorb engine movement.
Technician B says that the ducting is what connects the ridged air
cleaner to the throttle body of the intake manifold. Who is correct?
-
correct answer ✅Both Technician A and Technician B
All of the following engines direct the air fuel mixture into the
engine through the intake manifold
EXCEPT? -
correct answer ✅Gasoline direct-injection
, Engine performance CH 71 Exam
Questions & Answers (Grade A+)
The intake system does all of the following EXCEPT: -
correct answer ✅Prevent carbon dioxide from entering the engine.
Technician A says that engine output can be improved by increasing
the amount of the air-fuel mixture that is burned in the cylinder.
Technician B says that increasing the amount of the air-fuel mixture
reduces volumetric efficiency. Who is correct? -
correct answer ✅Technician A
An _______ uses energy that is normally wasted through the
exhaust to spin a compressor that forces air into the engine. -
correct answer ✅Turbocharger
An ______ is turned by the crankshaft, compresses the air, and
forces it into the engine. -
correct answer ✅Supercharger
An engine using forced induction can have a volumetric efficiency
well above ______ -
correct answer ✅100%
Questions & Answers (Grade A+)
Technician A says that coolant circulates through some intake
manifolds to help warm them up.
Technician B says that some intake manifolds use an electric heater
grid to warm up the intake air.
Who is correct? -
correct answer ✅Both Technician A and Technician B
Which of the following is one of the functions of an air cleaner? -
correct answer ✅Muffling the noise of the intake pulses
Technician A says that ducting can be made of hardened plastic
with flexible rubber couplings to absorb engine movement.
Technician B says that the ducting is what connects the ridged air
cleaner to the throttle body of the intake manifold. Who is correct?
-
correct answer ✅Both Technician A and Technician B
All of the following engines direct the air fuel mixture into the
engine through the intake manifold
EXCEPT? -
correct answer ✅Gasoline direct-injection
, Engine performance CH 71 Exam
Questions & Answers (Grade A+)
The intake system does all of the following EXCEPT: -
correct answer ✅Prevent carbon dioxide from entering the engine.
Technician A says that engine output can be improved by increasing
the amount of the air-fuel mixture that is burned in the cylinder.
Technician B says that increasing the amount of the air-fuel mixture
reduces volumetric efficiency. Who is correct? -
correct answer ✅Technician A
An _______ uses energy that is normally wasted through the
exhaust to spin a compressor that forces air into the engine. -
correct answer ✅Turbocharger
An ______ is turned by the crankshaft, compresses the air, and
forces it into the engine. -
correct answer ✅Supercharger
An engine using forced induction can have a volumetric efficiency
well above ______ -
correct answer ✅100%
