| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
What is the function of the head gasket?
to seal the brake assembly from external contaminants |
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to seal the engine block from the cylinders |
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to connect the transmission to the drive train |
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to seal the exhaust system from the drive train |
A head gasket is a gasket that sits between the engine block and cylinder heads to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders.
Coolant is circulated through the engine by the:
water jacket |
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radiator |
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water pump |
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camshaft |
The water pump is driven by a belt connected to the crankshaft and ensures that coolant moves through the engine and radiator.
An overcooled engine:
is more efficient |
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generates more power |
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uses less gasoline |
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is less efficient |
An overcooled engine is less efficient. During the power stroke, combustion heat pushes down the piston. If too much of this heat is lost to the cooling system, the fuel might not combust completely and contaminate the engine's lubricating oil diminishing its lubricating ability. Incomplete combustion of fuel also negatively affects the engine's fuel efficiency and power output.
The __________ converts pressure on the brake pedal to hydraulic pressure in the brake lines.
master cylinder |
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brake linkage |
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brake knuckle |
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brake cylinder |
The master (brake) cylinder converts pressure on the brake pedal to hydraulic pressure in the brake lines.
Which of the following statements about v-type cyllinder arrangement is false?
common in motorcycles, cars, and trucks |
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engine is shorter than an inline engine |
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has two rows of cylinders |
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has an odd number of cylinders |
A v-arrangement has two rows of cylinders in a V-shaped block with a crankshaft at the bottom of the V. Any even number of cylinders is possible in this configuration from the V-2 that's commonly used in motorcycles up to V-12 or bigger for large trucks. The V design produces a shorter engine than an in-line cylinder configuration and allows for better air-fuel distribution.