| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Coolant is circulated through the engine by the:
camshaft |
|
water jacket |
|
radiator |
|
water pump |
The water pump is driven by a belt connected to the crankshaft and ensures that coolant moves through the engine and radiator.
The __________ converts pressure on the brake pedal to hydraulic pressure in the brake lines.
master cylinder |
|
brake cylinder |
|
brake knuckle |
|
brake linkage |
The master (brake) cylinder converts pressure on the brake pedal to hydraulic pressure in the brake lines.
The ignition coil is a(n):
step-up transformer |
|
amplifier |
|
step-down transformer |
|
filter |
The ignition coil steps up the 12 volts available from the battery or alternator to a voltage of 30,000 or more volts at the spark plug. Converting a lower voltage input into a higher voltage output makes the ignition coil a step-up transformer.
Ignition timing defines the point in time at the end of the compression stroke that which of the following happens?
exhaust valve opens |
|
intake valve opens |
|
the air-fuel mixture enters |
|
spark plugs fire |
Ignition timing defines the point in time at the end of the compression stroke that the spark plug fires. Measured in number of degrees before top dead center (BTDC), the exact point that the spark plugs initiate combustion varies depending on the speed of the engine. The timing is advanced (the spark plugs fire a few more degrees BTDC) when the engine is running faster and retarded when it's running slower.
Engines with radial cylinder configurations are most common in:
heavy truck engines |
|
train engines |
|
tank engines |
|
aircraft engines |
A radial arrangement places cylinders in a circle around the crankshaft and is used almost exclusively in aircraft engines.