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Final Exam Review 5th Period
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______________________________ rings prevent combustion pressure from leaking into the engine’s crankcase.
Compression
Valves close off the intake and exhaust ______________________________ for each engine cylinder.
ports
The connecting rod small end is attached to the ______________________________ by a wrist pin.
piston
The engine main ______________________________ are removable inserts that fit between the crankshaft main journals and the block main bore.
bearings
An oil pan drain plug should be turned ______________________________ for removal.
counterclockwise
A(n) ______________________________ is often built into the cap of the power steering pump.
dipstick
A wrench designed to be hit by a hammer is called a(n) ______________________________ wrench.
slug
A transaxle is most commonly used with ______________________________-wheel-drive vehicles.
front
A transmission and differential are combined in the ______________________________ used by front-wheel-drive vehicles.
transaxle
For efficient engine operation, the fuel system must provide the correct mixture of ______________________________ and fuel.
air
In a four-stroke cycle engine, the crankshaft must make four complete rotations to complete the cycle.
False
You should always have your instructor demonstrate potentially dangerous equipment before you try to use it.
True
Torx screws have a square indentation in their heads.
False
Asphyxiation is caused by breathing toxic substances in the air.
True
A magnetic pickup will attract any kind of metal.
False
A hybrid electric vehicle uses two methods of propulsion—an internal combustion engine and an electric drive train.
True
Valve springs are used to open an engine’s intake and exhaust valves.
False
Vehicle wheelbase and vehicle length are different terms for the same measurement.
False
Force is transmitted from the engine to the vehicle's wheels by the drive train.
True
Piston rings are used to keep combustion pressure and oil from leaking between the piston and the cylinder wall.
True
Pistons typically use ____ compression rings and one oil ring.
 
2
 
3
 
4
 
1–3
The piston is mounted to the connecting rod by the ____.
 
wrist pin
 
cylinder bolt
 
piston skirt
 
cam lobe
____ is another name used to describe the engine bottom end.
 
Short block
 
Cylinder block
 
Crank end
 
Lower deck
In a typical gasoline-powered automobile engine, how many piston strokes make up a complete cycle?
 
Four
 
One
 
Two
 
Three
Which of the following contaminants is not likely to be found in transmission oil?
 
Gasoline.
 
Dirt
 
Friction material.
 
Moisture.
Engine coolant consists of ____.
 
water and antifreeze
 
oil and antifreeze
 
water and stop leak
 
water only
The following tool is a(n) ____ wrench.
 
oil filter
 
timing adjustment
 
battery terminal
 
fuel filter
If you find fluid dripping from a vehicle, where is the likeliest direction to look for the actual leak?
 
Above and in front of the drip point.
 
Directly above the drip point.
 
Above and behind the drip point.
 
Immediately to the left or right of the drip point.
When checking hose conditions, which would indicate the need for replacement?
 
All of the above.
 
Softening.
 
Hardening
 
Cracks or abrasions.
A large repair facility recycles its used motor oil. Technician A says that only about one quart of high-quality oil can be recovered from each gallon of used oil that is recycled. Technician B says the recovery rate is about two and one-ha
 
B only.
 
A only.
 
Both A and B.
 
Neither A nor B.
An engine needs to be moved. Technician A says two people can slide the engine out of the way. Technician B says that an engine crane should be used to move the engine. Who is right?
 
B only.
 
A only.
 
Both A and B.
 
Neither A nor B.
Which of the items listed below is not a potential explosion hazard?
 
Oil pan.
 
Battery
 
Empty fuel tank.
 
Welding gas cylinders.
Which of the following is not a socket wrench drive size?
 
5/8
 
1/4
 
3/8
 
1/2
When working with sockets, Technician A states that a socket’s “point” is the size of the square opening for the handle. Technician B states the point of a socket is the box configuration for the bolt head. Who is right?
 
B only.
 
A only.
 
Both A and B.
 
Neither A nor B.
When using a hacksaw, you should apply light pressure ____.
 
on the forward stroke
 
on the backward stroke
 
on both forward and backward strokes
 
None of the above.
The alternator is part of a vehicle’s ____ system.
 
charging
 
starting
 
lighting
 
ignition
Camshaft action is transmitted to the valves by the ____.
 
rocker arms
 
lifters
 
valve springs
 
cam followers
The radiator of a vehicle is part of its ____ system.
 
cooling
 
lubrication
 
electrical
 
fuel
An automotive ____ is a group of related parts that perform a specific job.
 
system
 
sequence
 
component
 
process
The engines that are used in most automobiles are ____ engines.
 
All of the above.
 
multi-cylinder
 
four-stroke cycle
 
piston


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