ENGINE REPAIR Actual Exam Questions
with 100% Correct Answers Latest Update
Attained Grade A+
Which of the following is not a common engine construction material?
a. Aluminum
b. Carbon fiber
c. Cast iron
d. Magnesium
Ans: b. Carbon fiber
Technician A says engines can be classified by their number of operating cycles.
Technician B says engines are classified by the type of valvetrain used. Who is
correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: c. Both A and B
How many degrees of crankshaft rotation are required to complete one complete
combustion cycle?
a. 180
b. 360
c. 540
d. 720
,Ans: d. 720
Technician A says most engines rotate in the clockwise direction. Technician B
says most engines rotate in the counterclockwise direction. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: b. Technician B
All of the following statements about compression ratio or correct except:
a. Increased compression ratios require high-octane fuel
b. Carbon deposits decrease compression ratio
c. Compression ratio is based on piston stroke
d. Increasing compression ratio can increase power output
Ans: b. Carbon deposits decrease compression ratio
Technician A says the Atkinson cycle reduces displacement and compression.
Technician B says the Atkinson cycle shortens the compression stroke. Who is
correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
,Ans: c. Both A and B
All of the following are advantages of diesel engines except:
a. Diesel engines use less fuel than gasoline engines
b. Improved cold-weather starting capability
c. Increased durability compared to gasoline engines
d. Increased combustion efficiency
Ans: b. Improved cold weather starting capability
Technician A says in a series hybrid, the electric motor drives the wheels.
Technician B says in a series hybrid, the wheels are driven by the internal
combustion engine only. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: a. Technician A
Which of the following is not a high-efficiency low-emission engine design?
a. Stratified charge engines
b. Rotary engines
c. Homogenous charge engines
d. Variable compression engines
Ans: b. Rotary engines
A four-cylinder late model engine has low cranking dry and wet compression
readings on one cylinder. Technician A says a worn camshaft lobe could be the
, cause. Technician B says worn valve seats could be the cause. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: d. Neither A or B
Which test can be used to diagnose a head gasket leak?
a. Cylinder power balance test
b. Running compression test
c. Cylinder leakage test
d. Vacuum test
Ans: c. Cylinder leakage test
Vacuum gauge readings are being discussed. Technician A says a low but steady
vacuum reading indicates a timing problem. Technician B says a low but steady
reading indicates a restricted exhaust system. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
with 100% Correct Answers Latest Update
Attained Grade A+
Which of the following is not a common engine construction material?
a. Aluminum
b. Carbon fiber
c. Cast iron
d. Magnesium
Ans: b. Carbon fiber
Technician A says engines can be classified by their number of operating cycles.
Technician B says engines are classified by the type of valvetrain used. Who is
correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: c. Both A and B
How many degrees of crankshaft rotation are required to complete one complete
combustion cycle?
a. 180
b. 360
c. 540
d. 720
,Ans: d. 720
Technician A says most engines rotate in the clockwise direction. Technician B
says most engines rotate in the counterclockwise direction. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: b. Technician B
All of the following statements about compression ratio or correct except:
a. Increased compression ratios require high-octane fuel
b. Carbon deposits decrease compression ratio
c. Compression ratio is based on piston stroke
d. Increasing compression ratio can increase power output
Ans: b. Carbon deposits decrease compression ratio
Technician A says the Atkinson cycle reduces displacement and compression.
Technician B says the Atkinson cycle shortens the compression stroke. Who is
correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
,Ans: c. Both A and B
All of the following are advantages of diesel engines except:
a. Diesel engines use less fuel than gasoline engines
b. Improved cold-weather starting capability
c. Increased durability compared to gasoline engines
d. Increased combustion efficiency
Ans: b. Improved cold weather starting capability
Technician A says in a series hybrid, the electric motor drives the wheels.
Technician B says in a series hybrid, the wheels are driven by the internal
combustion engine only. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: a. Technician A
Which of the following is not a high-efficiency low-emission engine design?
a. Stratified charge engines
b. Rotary engines
c. Homogenous charge engines
d. Variable compression engines
Ans: b. Rotary engines
A four-cylinder late model engine has low cranking dry and wet compression
readings on one cylinder. Technician A says a worn camshaft lobe could be the
, cause. Technician B says worn valve seats could be the cause. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
Ans: d. Neither A or B
Which test can be used to diagnose a head gasket leak?
a. Cylinder power balance test
b. Running compression test
c. Cylinder leakage test
d. Vacuum test
Ans: c. Cylinder leakage test
Vacuum gauge readings are being discussed. Technician A says a low but steady
vacuum reading indicates a timing problem. Technician B says a low but steady
reading indicates a restricted exhaust system. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A or B
