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Engine Repair Final Exam Practice Questions and Answers

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Engine Repair Final Exam Practice Questions and Answers Which one of the following is NOT a stroke of the four-stroke cycle? A) intake B) compression C) ignition D) exhaust - ANSWER-C) ignition What is compression ratio? A) the diameter of the cylinder B) cylinder arrangement C) the ratio...

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  • November 4, 2024
  • 61
  • 2024/2025
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KaylinHoffman
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Engine Repair Final Exam Practice

Questions and Answers


Which one of the following is NOT a stroke of the four-stroke cycle?




A) intake


B) compression


C) ignition


D) exhaust - ANSWER✔✔-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 - ANSWER✔✔-D) none of these answers is correct


To complete a four-stroke cycle in one cylinder, the crankshaft must rotate _____ degrees.




A) 180

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,Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


B) 360


C) 540


D) 720 - ANSWER✔✔-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 - ANSWER✔✔-C) power


The stroke of an engine is _____ that of a crankshaft throw.




A) half


B) twice


C) four times


D) equal to - ANSWER✔✔-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 _____.




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A) displacement


B) compression ratio


C) volumetric efficiency


D) mechanical efficiency - ANSWER✔✔-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?




A) incorrect valve timing


B) collapsed lifter


C) burnt intake valve


D) worn piston rings - ANSWER✔✔-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 - ANSWER✔✔-A) flywheel


Which V-type engine valve train design may use four camshafts?


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A) OHC


B) DOHC


C) OHV


D) DOHV - ANSWER✔✔-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 - ANSWER✔✔-B) two


In what type of engine is the intake valve held open longer than normal during the compression stroke?




A) Wankel


B) Atkinson cycle


C) two-stroke


D) diesel - ANSWER✔✔-B) Atkinson cycle


Both valves are closed on the _____ strokes.




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