| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.90 |
| Score | 0% | 58% |
Which of the following receive signals from the powertrain control module (PCM) and carry out its instructions?
actuators |
|
sensors |
|
valves |
|
joints |
Actuators receive signals from the PCM and carry out adjustments needed based on the data the PCM received from the sensors.
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.
The spark plug fires during which engine stoke?
power |
|
intake |
|
exhaust |
|
compression |
During the power stroke, just before the piston reaches top dead center, the spark plug fires and ignites the compressed air-fuel mixture. The resulting expansion due to combustion pushes the piston back down the cylinder toward bottom dead center.
Which of the following enables heat transfer from the cylinder heads to the coolant?
water pump |
|
water sleeve |
|
radiator |
|
water jacket |
A water jacket is a coolant-filled casing that allows heat transfer from the engine block and cylinder heads to the liquid coolant.
What is the function of the alternator?
charges the battery when the car is not running |
|
replaces the electrical energy that the car draws from the battery |
|
converts motion from the wheels into DC power |
|
provides AC power for the car's electrical components |
An automobile's electrical system runs on DC power and the bulk of that power is supplied by the battery. The alternator converts the motion of the rotor into AC power which is then fed through the rectifier to convert it to DC power that both the car and the battery can use.