AST: Engine Repair
Question 1.
Antifreeze provides protection against:
ANSWER
All of the above
Question 2.
What engine design uses the crankcase as part of the fuel system
ANSWER
Two-stroke engine
Question 3.
The cam acts on a valve lifter in which type of engine?
ANSWER
Pushrod engine
Question 4.
Two technicians are discussing modern day four stroke engines. Technician A says one stroke of a piston moves the crankshaft
through one complete revolution. Technician B says a crankshaft has to make two completed revolutions before the process can start
again. Who is correct?
ANSWER
Technician B only
Question 5.
What major problem has limited the production of automobiles using air-cooled engines?
ANSWER
Exhaust emissions
Question 6.
Technician A says there is more energy contained in a gallon of diesel fuel than there is in a gallon of gasoline. Technician B says
diesel fuel is thicker than gasoline. Who is correct?
ANSWER
Both Technician A and B
Question 7.
Engine displacement can be expressed in:
ANSWER
l (liters)
, Question 8.
Which type of engine uses a compression ignition system?
ANSWER
Diesel engine
Question 9.
The sequence in which the spark plugs fire is called:
ANSWER
Firing order
Question 10.
What is the most common type of fuel used in passenger vehicles?
ANSWER
Gasoline
Question 11.
Technician A says that when diagnosing an automotive system a logical, step-by-step approach should be developed. Technician B
says improper service can cause engine mechanical problems and increased wear. Who is correct?
ANSWER
Both Technician A and B
Question 12.
A preliminary engine inspection should include a:
ANSWER
Visual inspection
Question 13.
What type of knocking sound is caused by a piston rocking in a worn cylinder bore and contacting the cylinder wall?
ANSWER
Piston slap
Question 14.
What must a technician first do before beginning diagnostics on any system?
ANSWER
Know how the system is supposed to work
Question 15.
Why would you be more likely to hear a rod knock when the engine warms up?
ANSWER
Because the engine oil is thinner when hot
Question 1.
Antifreeze provides protection against:
ANSWER
All of the above
Question 2.
What engine design uses the crankcase as part of the fuel system
ANSWER
Two-stroke engine
Question 3.
The cam acts on a valve lifter in which type of engine?
ANSWER
Pushrod engine
Question 4.
Two technicians are discussing modern day four stroke engines. Technician A says one stroke of a piston moves the crankshaft
through one complete revolution. Technician B says a crankshaft has to make two completed revolutions before the process can start
again. Who is correct?
ANSWER
Technician B only
Question 5.
What major problem has limited the production of automobiles using air-cooled engines?
ANSWER
Exhaust emissions
Question 6.
Technician A says there is more energy contained in a gallon of diesel fuel than there is in a gallon of gasoline. Technician B says
diesel fuel is thicker than gasoline. Who is correct?
ANSWER
Both Technician A and B
Question 7.
Engine displacement can be expressed in:
ANSWER
l (liters)
, Question 8.
Which type of engine uses a compression ignition system?
ANSWER
Diesel engine
Question 9.
The sequence in which the spark plugs fire is called:
ANSWER
Firing order
Question 10.
What is the most common type of fuel used in passenger vehicles?
ANSWER
Gasoline
Question 11.
Technician A says that when diagnosing an automotive system a logical, step-by-step approach should be developed. Technician B
says improper service can cause engine mechanical problems and increased wear. Who is correct?
ANSWER
Both Technician A and B
Question 12.
A preliminary engine inspection should include a:
ANSWER
Visual inspection
Question 13.
What type of knocking sound is caused by a piston rocking in a worn cylinder bore and contacting the cylinder wall?
ANSWER
Piston slap
Question 14.
What must a technician first do before beginning diagnostics on any system?
ANSWER
Know how the system is supposed to work
Question 15.
Why would you be more likely to hear a rod knock when the engine warms up?
ANSWER
Because the engine oil is thinner when hot
