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Engine Repair Final Exam Questions with Detailed
Verified Answers
Which one of the following is NOT a stroke of the four-stroke cycle?
A) intake
B) compression
C) ignition
D) exhaust Ans: ✓ ✓ ✓ C) ignition
What is compression ratio?
A) the diameter of the cylinder
B) cylinder arrangement
C) the ratio of the air to fuel mixture
D) none of these answers is correct Ans: ✓ ✓ ✓ D) none of these answers is correct
To complete a four-stroke cycle in one cylinder, the crankshaft must rotate _____ degrees.
A) 180
B) 360
C) 540
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D) 720 Ans: ✓ ✓ ✓ D) 720
On a 4-cylinder engine that has a firing order of 1342, if number 1 cylinder is on the exhaust stroke,
what stroke is number 3 cylinder on?
A) intake
B) compression
C) power
D) exhaust Ans: ✓ ✓ ✓ C) power
The stroke of an engine is _____ that of a crankshaft throw.
A) half
B) twice
C) four times
D) equal to Ans: ✓ ✓ ✓ B) twice
The volume of the combustion chamber when the piston is at BDC divided by the volume of the
chamber when the piston is at TDC is called _____.
A) displacement
B) compression ratio
C) volumetric efficiency
D) mechanical efficiency Ans: ✓ ✓ ✓ B) compression ratio
Which of the following engine problems may be indicated by good results from a compression test
and a cylinder leakage test but poor results from a cylinder power balance test?
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A) incorrect valve timing
B) collapsed lifter
C) burnt intake valve
D) worn piston rings Ans: ✓ ✓ ✓ B) collapsed lifter
The component connected to the crankshaft that serves to store some of the engine's power is the
_____.
A) flywheel
B) connecting rod
C) piston
D) main bearing Ans: ✓ ✓ ✓ A) flywheel
Which V-type engine valve train design may use four camshafts?
A) OHC
B) DOHC
C) OHV
D) DOHV Ans: ✓ ✓ ✓ B) DOHC
A four-stroke cycle engine requires at least _____ valves at the top of each cylinder.
A) one
B) two
C) three
D) four Ans: ✓ ✓ ✓ B) two
© Get it right 2025 Getaway - Stuvia US All rights reserved
Engine Repair Final Exam Questions with Detailed
Verified Answers
Which one of the following is NOT a stroke of the four-stroke cycle?
A) intake
B) compression
C) ignition
D) exhaust Ans: ✓ ✓ ✓ C) ignition
What is compression ratio?
A) the diameter of the cylinder
B) cylinder arrangement
C) the ratio of the air to fuel mixture
D) none of these answers is correct Ans: ✓ ✓ ✓ D) none of these answers is correct
To complete a four-stroke cycle in one cylinder, the crankshaft must rotate _____ degrees.
A) 180
B) 360
C) 540
© Get it right 2025 Getaway - Stuvia US All rights reserved
,Click here for more: Scholars nexus
D) 720 Ans: ✓ ✓ ✓ D) 720
On a 4-cylinder engine that has a firing order of 1342, if number 1 cylinder is on the exhaust stroke,
what stroke is number 3 cylinder on?
A) intake
B) compression
C) power
D) exhaust Ans: ✓ ✓ ✓ C) power
The stroke of an engine is _____ that of a crankshaft throw.
A) half
B) twice
C) four times
D) equal to Ans: ✓ ✓ ✓ B) twice
The volume of the combustion chamber when the piston is at BDC divided by the volume of the
chamber when the piston is at TDC is called _____.
A) displacement
B) compression ratio
C) volumetric efficiency
D) mechanical efficiency Ans: ✓ ✓ ✓ B) compression ratio
Which of the following engine problems may be indicated by good results from a compression test
and a cylinder leakage test but poor results from a cylinder power balance test?
© Get it right 2025 Getaway - Stuvia US All rights reserved
, Click here for more: Scholars nexus
A) incorrect valve timing
B) collapsed lifter
C) burnt intake valve
D) worn piston rings Ans: ✓ ✓ ✓ B) collapsed lifter
The component connected to the crankshaft that serves to store some of the engine's power is the
_____.
A) flywheel
B) connecting rod
C) piston
D) main bearing Ans: ✓ ✓ ✓ A) flywheel
Which V-type engine valve train design may use four camshafts?
A) OHC
B) DOHC
C) OHV
D) DOHV Ans: ✓ ✓ ✓ B) DOHC
A four-stroke cycle engine requires at least _____ valves at the top of each cylinder.
A) one
B) two
C) three
D) four Ans: ✓ ✓ ✓ B) two
© Get it right 2025 Getaway - Stuvia US All rights reserved
