| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.04 |
| Score | 0% | 61% |
Engine oil viscosity is rated using the format XW-XX with the number preceding the W indicating viscosity at __________ ℉ and the XX indicating viscosity at __________ ℃.
0, 0 |
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100, 100 |
|
0, 100 |
|
100, 0 |
The primary component of the lubrication system is engine oil. Engines require oil blends with different thickness (viscosity) and additives depending on their operating conditions. Viscosity is rated using the format XW-XX with the number preceding the W (winter) rating the oil’s viscosity at 0 ℉ (-17.8 ℃) and the XX indicating viscosity at 100 ℃.
Coolant is circulated through the engine by the:
water jacket |
|
radiator |
|
camshaft |
|
water pump |
The water pump is driven by a belt connected to the crankshaft and ensures that coolant moves through the engine and radiator.
Spark plugs receive current from the:
distributor |
|
alternator |
|
ignition coil |
|
battery |
Spark plugs receive current from the distributor and use it to spark combustion in the combustion chamber of a cylinder.
__________ are made with wide gap coils of rigid steel cable and both hold the vehicle chassis up off the ground and absorb energy from wheel movement making for a smoother ride.
suspension springs |
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shock absorbers |
|
ignition coils |
|
control arms |
Suspension springs are made with wide gap coils of rigid steel cable and both hold the vehicle chassis up off the ground and absorb energy from wheel movement making for a smoother ride.
What type of energy does an automotive battery produce?
direct current |
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rotational energy |
|
chemical energy |
|
alternating current |
An automotive battery produces direct current for use by automotive systems.