Question 1

Technician A says cross-flow heads improve engine breathing. Technician B says cross-flow heads inhibit engine breathing. Who is correct?

Accepted Answer

A) Technician A 
B) Technician B 
C) Both technicians 
D) Neither technician 
A) Technician A 
B) Technician B 
C) Both technicians 
D) Neither technician

Question 2

What is the formula for the CFM requirement at 100% volumetric efficiency?
Give an example.

Accepted Answer

CID / 2 × RPM / 1728

Question 3

Modern day engines can have _____ valves per cylinder.

Accepted Answer

A) two 
B) three 
C) four 
D) all of the above 
A) two 
B) three 
C) four 
D) all of the above

Question 4

Technician A says that headers do not improve performance at low rpm unless they are specifically tuned for low rpm use. Technician B says that longer header pipes tend to improve low rpm performance. Who is right?

Accepted Answer

A) Technician A only 
B) Technician B only 
C) Both A and B 
D) Neither A nor B 
A) Technician A only 
B) Technician B only 
C) Both A and B 
D) Neither A nor B

Question 5

Headers are exhaust manifolds made of steel tubing.

Accepted Answer

A) True 
 B)False

Technician A says cross-flow heads improve engine breathing. Technician B says cross-flow heads inhibit engine breathing. Who is correct?

What is the formula for the CFM requirement at 100% volumetric efficiency? Give an example.

Modern day engines can have _____ valves per cylinder.

Technician A says that headers do not improve performance at low rpm unless they are specifically tuned for low rpm use. Technician B says that longer header pipes tend to improve low rpm performance. Who is right?

Headers are exhaust manifolds made of steel tubing.

Engine Operation

Engine Shop Safety

Diagnosing Engine Problems

Engine Removal, Disassembly, Inspection, and In-Chassis Repairs

Cleaning the Engine

Micrometer Practice

Cylinder Head: Parts and Service

Cylinder Head: Springs, Valves, and Valve Sets

Camshafts, Lifters, Timing Belts, and Chains

Cylinder Block: Inspection and Service

Crankshaft, Bearings, and Engine Balancing

Pistons, Rings, and Connecting Rods

Lubrication

Cooling System

Engine Hardware: Fasteners, Thread Repair, and Gaskets

Reassembly and Starting

Turbochargers and Superchargers

Producing Power: Valve Timing, Power and Torque Measurement

Filters

Exam 17: Engine Breathing: Intake and Exhaust Systems

Technician A says cross-flow heads improve engine breathing. Technician B says cross-flow heads inhibit engine breathing. Who is correct?

What is the formula for the CFM requirement at 100% volumetric efficiency? Give an example.

Modern day engines can have _____ valves per cylinder.

Technician A says that headers do not improve performance at low rpm unless they are specifically tuned for low rpm use. Technician B says that longer header pipes tend to improve low rpm performance. Who is right?

Headers are exhaust manifolds made of steel tubing.

Engine Operation

Engine Shop Safety

Diagnosing Engine Problems

Engine Removal, Disassembly, Inspection, and In-Chassis Repairs

Cleaning the Engine

Micrometer Practice

Cylinder Head: Parts and Service

Cylinder Head: Springs, Valves, and Valve Sets

Camshafts, Lifters, Timing Belts, and Chains

Cylinder Block: Inspection and Service

Crankshaft, Bearings, and Engine Balancing

Pistons, Rings, and Connecting Rods

Lubrication

Cooling System

Engine Hardware: Fasteners, Thread Repair, and Gaskets

Reassembly and Starting

Turbochargers and Superchargers

Producing Power: Valve Timing, Power and Torque Measurement

Filters