AUTOMOTIVE MECHANICS TEST #1
QUESTIONS WITH COMPLETE
SOLUTION
p All overhead valve engines - Have the valves located in the cylinder head
A SOHC V-8 engine uses how many camshafts? - Two
Coolant flow through the radiator is controlled by - Thermostat
A normally aspirated engine loses about _____ power per 1,000 ft. of elevation - 3%
The camshaft is turned by the - Crankshaft
One cylinder of an automobile four stroke cycle engine completes a cycle every - 720 deg
How many rotations of the crankshaft are required to complete each stroke of a 4 cylinder four stroke
cycle engine? - ½
How many times does the camshaft of a four-stroke cycle engine rotate during four rotations of the
crankshaft? - 2
What part(s) of the engine changes rotary motion to reciprocating motion which enables the valves to be
opened? - The camshaft
An engine camshaft is timed to the crankshaft so that the valves open and close in relation to: - Piston
position
The flywheel helps to keep the crankshaft turning between _________ strokes. - Power
The crankshaft of an engine changes reciprocating motion to rotary motion - True
When fuel explodes in a cylinder, what movable part of the engine first receives the force? - Piston
How many revolutions of the crankshaft are necessary to complete the four-stroke cycle? - 2
Which of the following bearings support the crankshaft of an engine? - Main
Compression rings installed on the pistons are designed to - Seal the combustion chamber
A rotating force is called - Torque
The speed of the engine is measured in - Revolutions per minute
What part of the engine closes the valves? - Valve spring
What part should be removed to test cylinder compression on a diesel engine? - Either A or C (injector &
glow plug)
What is used to ignite the air-fuel mixture in a diesel engine? - Heat
QUESTIONS WITH COMPLETE
SOLUTION
p All overhead valve engines - Have the valves located in the cylinder head
A SOHC V-8 engine uses how many camshafts? - Two
Coolant flow through the radiator is controlled by - Thermostat
A normally aspirated engine loses about _____ power per 1,000 ft. of elevation - 3%
The camshaft is turned by the - Crankshaft
One cylinder of an automobile four stroke cycle engine completes a cycle every - 720 deg
How many rotations of the crankshaft are required to complete each stroke of a 4 cylinder four stroke
cycle engine? - ½
How many times does the camshaft of a four-stroke cycle engine rotate during four rotations of the
crankshaft? - 2
What part(s) of the engine changes rotary motion to reciprocating motion which enables the valves to be
opened? - The camshaft
An engine camshaft is timed to the crankshaft so that the valves open and close in relation to: - Piston
position
The flywheel helps to keep the crankshaft turning between _________ strokes. - Power
The crankshaft of an engine changes reciprocating motion to rotary motion - True
When fuel explodes in a cylinder, what movable part of the engine first receives the force? - Piston
How many revolutions of the crankshaft are necessary to complete the four-stroke cycle? - 2
Which of the following bearings support the crankshaft of an engine? - Main
Compression rings installed on the pistons are designed to - Seal the combustion chamber
A rotating force is called - Torque
The speed of the engine is measured in - Revolutions per minute
What part of the engine closes the valves? - Valve spring
What part should be removed to test cylinder compression on a diesel engine? - Either A or C (injector &
glow plug)
What is used to ignite the air-fuel mixture in a diesel engine? - Heat
