| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.00 |
| Score | 0% | 60% |
Which engine component converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components?
driveshaft |
|
halfshaft |
|
crankshaft |
|
camshaft |
The crankshaft converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components.
Opposed cylinder designs feature two rows of cylinders that are placed at what angle to each other?
45° |
|
180° |
|
270° |
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90° |
Opposed cylinder designs place cylinders flat in two rows 180° opposite each other with a single crankshaft running between them.
A vehicle's lighting system is protected from current spikes by:
the battery |
|
fuses and circuit breakers |
|
the voltage regulator |
|
the alternator |
The lighting system consists of interior lights, instrument panel lighting, headlights, and taillights. Like household electrical circuits, the vehicle's lighting system is protected from current spikes by fuses and circuit breakers.
What is the primary difference between internal and external combustion engines?
the type of fuel used |
|
where the power is developed |
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how the fuel is ignited |
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the air-fuel mix for optimum combustion |
The primary difference between internal and external combustion engines lies in where the power is developed. In an internal combustion engine fuel is ignited and burned inside the same container where the power is developed while in an external combustion engine the fuel is ignited outside the engine and the resulting power sent to it.
What is the name of the proper ratio of air to fuel necessary so that an engine burns all fuel with no excess air?
combustion ratio |
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stoichiometric ratio |
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ignition ratio |
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residual ratio |
The stoichiometric ratio defines the proper ratio of air to fuel necessary so that an engine burns all fuel with no excess air. For gasoline fuel, the stoichiometric ratio is about 14.7:1 or for every one gram of fuel, 14.7 grams of air are required. Too much air results in a lean air-fuel mixture that burns more slowly and hotter while too much fuel results in a rich mixture that burns quicker and cooler.