Automotive Engines Diagnosis, Repair, and Rebuilding 9th Edition By Tim Gilles, Tim LeVan (Test Bank)

Test Bank for Automotive
Engines Diagnosis,
Repair, and Rebuilding 9th
Edition By Tim Gilles, Tim
LeVan (All Chapters 1-19,
100% Original Verified, A+
Grade)
All Chapters Arranged
Reverse: 19-1

,Name Clas Dat
: s: e:

Chapter 19: Producing Power; Valve Timing, Power..
1. Some aftermarket camshaft sprockets for OHC engines are adjustable.
a. True
b. Fals
e
ANSWER: True
FEEDBACK: Correct Some applications allow for adjustable OHC camshaft
sprockets.
Incorrect
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 2/6/2023 7:58 AM
DATE MODIFIED: 2/6/2023 7:59 AM

2. Variable timing of the exhaust lobe is used to control torque.
a. True
b. Fals
e
ANSWER: False
FEEDBACK: Correct
Incorrect You cannot control an exhaust lobe independently of the camshaft.
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 2/6/2023 7:59 AM
DATE MODIFIED: 2/6/2023 8:00 AM

3. The camshaft is the determining factor in how efficiently the engine pumps air while operating at various speeds.
a. True
b. Fals
e
ANSWER: True
FEEDBACK: Correct The camshaft controls the rate and the amount of air moving through
the engine.
Incorrec
t
POINTS: 1
QUESTION TYP True / False
E:
HAS VARIABLES False
:
DATE CREATED 2/6/2023 8:00 AM
:
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,Name Clas Dat
: s: e:

Chapter 19: Producing Power; Valve Timing, Power..

DATE MODIFIE 2/6/2023 8:01 AM
D:

4. Net horsepower is the power lost through friction in the driveline and due to wind resistance, vehicle weight, tires, and
weather.
a. True
b. Fals
e
ANSWER: False
FEEDBACK: Correct
Incorrect Net horsepower is the horsepower created with all the accessories
turned on.
POINTS: 1
QUESTION TYPE True / False
:
HAS VARIABLES: False
DATE CREATED: 2/6/2023 8:02 AM
DATE MODIFIED 3/1/2023 6:35 AM
:

5. Compression ratio affects the amount of power an engine can produce by increasing the thermal efficiency of the
engine.
a. True
b. Fals
e
ANSWER: True
FEEDBACK Correct The compression ratio creates the potential power of the engine based on
: the power multiplication of the piston in each of the cylinders.
Incorrec
t
POINTS: 1
QUESTION True / False
TYPE:
HAS VARIA False
BLES:
DATE CREA 2/6/2023 8:03 AM
TED:
DATE MODI 2/6/2023 8:03 AM
FIED:

6. Brake horsepower is the horsepower measured at each wheel.
a. True
b. Fals
e
ANSWER: False
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, Name Clas Dat
: s: e:

Chapter 19: Producing Power; Valve Timing, Power..

FEEDBACK: Correct
Incorrec Brake horsepower is the amount of horsepower that is available at the
t crankshaft.
POINTS: 1
QUESTION TYP True / False
E:
HAS VARIABLES False
:
DATE CREATED 2/6/2023 8:04 AM
:
DATE MODIFIE 2/6/2023 8:04 AM
D:

7. A chassis dynamometer measures vehicle power, which includes any drivetrain friction, fuel consumption. and
emissions.
a. True
b. Fals
e
ANSWER: True
FEEDBACK: Correct A chassis dynamometer measures the vehicle operation in an
operational environment.
Incorrec
t
POINTS: 1
QUESTION TYP True / False
E:
HAS VARIABLE False
S:
DATE CREATE 2/6/2023 8:05 AM
D:
DATE MODIFIE 2/6/2023 8:05 AM
D:

8. A naturally aspirated gasoline engine has an efficiency rating of 20 to 25%.
a. True
b. Fals
e
ANSWER: True
FEEDBACK: Correct A naturally aspirated engine is not very efficient because of the spark
engine’s combustion properties.
Incorrec
t
POINTS: 1
QUESTION T True / False
YPE:
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