| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.74 |
| Score | 0% | 55% |
The __________ converts pressure on the brake pedal to hydraulic pressure in the brake lines.
brake linkage |
|
brake cylinder |
|
brake knuckle |
|
master cylinder |
The master (brake) cylinder converts pressure on the brake pedal to hydraulic pressure in the brake lines.
__________ results from oil buildup in the combustion chamber.
preignition |
|
combustion |
|
engine knock |
|
detonation |
Preignition results from the buildup of fuel deposits and/or oil in the combustion chamber. These deposits increase chamber pressure and reduce heat tranfer to the coolant. The trapped heat then raises the temperature of the air-fuel mix to the point that it combusts before ignition.
What type of energy does an automotive battery produce?
alternating current |
|
direct current |
|
chemical energy |
|
rotational energy |
An automotive battery produces direct current for use by automotive systems.
Which of the following is not a primary function of a vehicle's lubrication system?
cools engine parts |
|
clean contaminants |
|
quiets engine noise |
|
increases fuel economy |
The lubrication system lubricates engine components by putting an oil film between them to reduce friction and smooth engine operation, cools by absorbing heat from engine parts, seals the pistons and cylinders to contain combustion, cleans contaminants, and quiets engine noise.
Which of the following is not a function of a car battery?
delivers current to the ignition system to start the engine |
|
acts as an electrical reservoir for excessive current |
|
acts as a supplemental source of energy to moderate engine performance |
|
delivers supplemental current when the alternator can't handle high electrical system loads |
The lead-acid battery is the core of the electrical system, providing current to the ignition system to start the engine as well as delivering supplemental current when the alternator can't handle high electrical system loads and acting as an electrical reservoir for excessive current.