Engine Performance Ch 1 Exam Questions & Answers (Grade A+).docx

Engine Performance Ch 1 Exam
Questions & Answers (Grade A+)
True or False: On all modern engines, the crankshaft, camshaft, and
valves are located within the engine block. -
correct answer ✅False


True or False: Turbochargers and superchargers force more fuel into
the cylinders to increase performance. -
correct answer ✅False


True or False: The EGR valve is used to reduce hydrocarbon
emissions. -
correct answer ✅False


True or False: The three-way catalyst is used to convert HC, CO2,
and NOx into less harmful gases. -
correct answer ✅False


True or False: One complete combustion cycle requires two
revolutions of the crankshaft. -
correct answer ✅True


Technician A says GDI (Gasoline Direct Injection) systems operate
under very high pressures. Technician B says GDI (Gasoline Direct

, Engine Performance Ch 1 Exam
Questions & Answers (Grade A+)
Injection) systems are no longer used in modern engines. -
correct answer ✅Tech A


Technician A says to use only sockets that are designed for use on
impact wrenches when using an impact wrench. Technician B says
any socket is suitable to use with an impact wrench as long as the
technician visually inspects the socket. Who is correct? -
correct answer ✅Tech A


An electronic engine control system consists of:


Input sensors
Actuators
Control module
All of the above -
correct answer ✅All of the above


When using compressed air


Do not direct compressed against the skin.
Use only air gun nozzles approved by OSHA.