| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
For inline cylinder arrangements in an engine, how are the cylinders numbered?
sequentially from the front of the engine to the back |
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alternating from the front of the engine to the back |
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alternating from the back of the engine to the front |
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sequentially from the back of the engine to the front |
Inline cylinder arrangements number cylinders sequentially (1, 2, 3, ...) front to rear.
Which of the following regulates the flow of coolant through the radiator?
water jacket |
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water pump |
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thermostat |
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crankshaft |
The thermostat controls coolant (and, through it, engine) temperature by regulating the flow of coolant through the radiator. A bypass tube allows coolant to bypass the radiator and flow back into the water pump when its temperature is low enough that the thermostat is closed.
The primary purpose of the muffler is to:
remove harmful gases from the exhaust |
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cool the exhaust |
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quiet exhaust |
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reclaim unburned fuel |
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 right front wheel of your front-wheel drive car drops into a pothole and the left front wheel doesn't lose contact with the road. Which of the following is true?
your car has a rigid axle front suspension |
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your car has an independent rear suspension |
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your car has an independent front suspension |
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your car has a rigid axle rear suspension |
An independent suspension allows the wheels on either side of an axle to move independently from each other. The fact that the left front wheel didn't move up in response to the right front wheel moving down is evidence of this.
What cylinder arrangement would be most common in a four cylinder front-wheel drive vehicle?
inline |
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opposed |
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V-type |
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vertical |
Cylinder number and arrangement depends on the purpose of the engine. Smaller (four and six cylinder) engines in front-wheel drive vehicles often use an inline design which orients cylinders vertically over the crankshaft and aligns them in a row. Other common orientations are a horizontal/opposed design which places cylinders flat facing each other with the crankshaft between them and a V-type design common in six and eight cylinder engines that features one cylinder head per block of cylinders oriented at a 60 to 90 degree angle to each other with the crankshaft at the bottom of the V.