| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.04 |
| Score | 0% | 61% |
What provides the power necessary to start a car?
spark plugs |
|
powertrain control module |
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battery |
|
alternator |
The battery supplies the power necessary to start the engine when the ignition switch is is turned on.
The wheel __________ is the mounting point for the wheel and tire assembly.
base |
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hub |
|
knuckle |
|
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.
What is the primary difference between internal and external combustion engines?
how the fuel is ignited |
|
the type of fuel used |
|
the air-fuel mix for optimum combustion |
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where the power is developed |
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.
How are the cylinders numbered in V-type engines?
sequentially from the front of the engine to the back |
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sequentially from the back of the engine to the front |
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cylinder numbering varies by manufacturer |
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alternating from the front of the engine to the back |
In V-type engines the numbering sequence varies by manufacturer.
The spark plug fires during which engine stoke?
exhaust |
|
intake |
|
compression |
|
power |
During the power stroke, just before the piston reaches top dead center, the spark plug fires and ignites the compressed air-fuel mixture. The resulting expansion due to combustion pushes the piston back down the cylinder toward bottom dead center.