| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Which of the following is not a function of antifreeze?
raises the boiling point of water |
|
lubricates the cooling system |
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aids heat transfer |
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keeps water from freezing at low temperatures |
Modern car engines are cooled by liquid which circulates through the engine block and cylinder heads absorbing excess heat. This liquid is made up of half water and half antifreeze (commonly, ethylene glycol) which both keeps the water from freezing at low temperatures and raises its boiling point making heat transfer more efficient.
What links each piston to the engine's crankshaft?
cylinder arm |
|
connecting rod |
|
piston ring |
|
halfshaft |
A connecting rod employs a wrist pin to link each piston to the engine's crankshaft.
What type of energy does an automotive battery produce?
chemical energy |
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alternating current |
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direct current |
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rotational energy |
An automotive battery produces direct current for use by automotive systems.
The wheel __________ is the mounting point for the wheel and tire assembly.
knuckle |
|
hub |
|
base |
|
shaft |
The wheel hub is the mounting point for the wheel and tire assembly. The wheel hub can rotate while being held stable by the steering knuckle which applies the motion of the control arms to the wheels.
Coolant is circulated through the engine by the:
water pump |
|
radiator |
|
camshaft |
|
water jacket |
The water pump is driven by a belt connected to the crankshaft and ensures that coolant moves through the engine and radiator.