| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.60 |
| Score | 0% | 72% |
The primary purpose of the muffler is to:
cool the exhaust |
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quiet exhaust |
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reclaim unburned fuel |
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remove harmful gases from the exhaust |
The muffler follows the catalytic converter and absorbs sound to help quiet load exhaust. It is followed by the exhaust pipe which is the final exit point for exhaust gas from the vehicle.
The catalytic converter output consists primarily of:
water and carbon dioxide |
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gasoline |
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carbon monoxide |
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oxygen |
The catalytic converter converts pollutants in exhaust gas into less pollutant substances like carbon dioxide and water.
Which of these is not necessary for combustion?
fuel |
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air |
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heat source |
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accelerant |
Combustion is the burning of an air-fuel mixture to provide energy. It requires the presence of air, fuel, and a heat source to ignite the air-fuel mixture. In the internal combustion engine that powers automobiles and trucks the combustion happens inside the engine utilzing a fuel like gasoline, diesel fuel, or natural gas.
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 __________ ℃.
100, 100 |
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0, 100 |
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0, 0 |
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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 ℃.
Which engine component converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components?
crankshaft |
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halfshaft |
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camshaft |
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driveshaft |
The crankshaft converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components.