Engine performance Exam 1 Questions
and Answers 100% Pass
All overhead valve engines ________. ✔✔Have the overhead valves in the head
An SOHC V8 engine has how many camshafts? ✔✔Two
Torque is expressed in units of ________. ✔✔pound-feet
Horsepower is expressed in units of ________. ✔✔foots per pound
A normally aspirated automobile engine loses about ________ power per 1000 feet of altitude.
✔✔3%
One cylinder of an automotive four-stroke cycle engine completes a cycle every ________.
✔✔720 degrees
How many rotations of the crankshaft are required to complete each stroke of a four-stroke cycle
engine? ✔✔one-half
,A rotating force is called ________. ✔✔Torque
Technician A says that the crankshaft determines the stroke of an engine. Technician B says that
the length of the connecting rod determines the stroke of an engine. Which technician is correct?
✔✔Tech A crankshaft
Which component is NOT needed in a typical overhead cam engine? ✔✔pushrod
Technician A says that a typical DOHC V6 engine uses two camshafts. Technician B says that
overhead cam engines generally can run at higher rotational speeds than overhead valve engines.
Which technician is correct? ✔✔Tech B overhead cam engines
Which of the following is the most correct statement about the direction of engine rotation?
✔✔Most engines rotate clockwise as viewed from the front of the engine.
The following statements are all correct EXCEPT ________ ✔✔Torque always results in
movement
, Technician A says that changing connecting rod length changes engine stroke. Technician B says
that changing connecting rod length changes the position of the piston in the cylinder. Which
technician is correct? ✔✔Tech B Changes position on the piston
All of these are correct EXCEPT ________ ✔✔Engines produce higher horsepower at higher
altitude.
The following statements are all correct EXCEPT ________ ✔✔Torque always results in
movement.
How many degrees of CRANKSHAFT rotation are needed to complete the four stroke
combustion cycle? ✔✔720
How many degrees of CRANKSHAFT rotation are required for a piston to travel from TDC to
BDC and return to TDC? ✔✔360
Winter blend gasoline ________. ✔✔Can cause engine driveability problems if used during
warm weather
Vaporizes more easily than summer blend gasoline
and Answers 100% Pass
All overhead valve engines ________. ✔✔Have the overhead valves in the head
An SOHC V8 engine has how many camshafts? ✔✔Two
Torque is expressed in units of ________. ✔✔pound-feet
Horsepower is expressed in units of ________. ✔✔foots per pound
A normally aspirated automobile engine loses about ________ power per 1000 feet of altitude.
✔✔3%
One cylinder of an automotive four-stroke cycle engine completes a cycle every ________.
✔✔720 degrees
How many rotations of the crankshaft are required to complete each stroke of a four-stroke cycle
engine? ✔✔one-half
,A rotating force is called ________. ✔✔Torque
Technician A says that the crankshaft determines the stroke of an engine. Technician B says that
the length of the connecting rod determines the stroke of an engine. Which technician is correct?
✔✔Tech A crankshaft
Which component is NOT needed in a typical overhead cam engine? ✔✔pushrod
Technician A says that a typical DOHC V6 engine uses two camshafts. Technician B says that
overhead cam engines generally can run at higher rotational speeds than overhead valve engines.
Which technician is correct? ✔✔Tech B overhead cam engines
Which of the following is the most correct statement about the direction of engine rotation?
✔✔Most engines rotate clockwise as viewed from the front of the engine.
The following statements are all correct EXCEPT ________ ✔✔Torque always results in
movement
, Technician A says that changing connecting rod length changes engine stroke. Technician B says
that changing connecting rod length changes the position of the piston in the cylinder. Which
technician is correct? ✔✔Tech B Changes position on the piston
All of these are correct EXCEPT ________ ✔✔Engines produce higher horsepower at higher
altitude.
The following statements are all correct EXCEPT ________ ✔✔Torque always results in
movement.
How many degrees of CRANKSHAFT rotation are needed to complete the four stroke
combustion cycle? ✔✔720
How many degrees of CRANKSHAFT rotation are required for a piston to travel from TDC to
BDC and return to TDC? ✔✔360
Winter blend gasoline ________. ✔✔Can cause engine driveability problems if used during
warm weather
Vaporizes more easily than summer blend gasoline
