| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
Opposed cylinder designs feature two rows of cylinders that are placed at what angle to each other?
270° |
|
90° |
|
45° |
|
180° |
Opposed cylinder designs place cylinders flat in two rows 180° opposite each other with a single crankshaft running between them.
Which engine component converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components?
crankshaft |
|
driveshaft |
|
halfshaft |
|
camshaft |
The crankshaft converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components.
Which of the following statements about fuel injection is false?
optimizes fuel delivery using various electronic engine sensors |
|
relies on suction to draw fuel into the engine |
|
atomizes fuel using high pressure and injects it into the engine |
|
has replaced the carburetor as the primary fuel delivery system used in automotive engines |
Fuel injection has replaced the carburetor as the primary automobile fuel delivery system. The main difference between the fuel injector and the carburetor is that fuel injection atomizes the fuel by forcibly pumping it through a small nozzle under high pressure while a carburetor relies on suction to draw fuel into an accelerated intake air stream.
The air-fuel mixture is delivered to the combustion chamber by a(n):
exhaust valve |
|
fuel valve |
|
air valve |
|
intake valve |
The combustion chamber is located in the cylinder head and contains the combustion of the air-fuel mixture. This mixture is delivered by an intake valve and the waste gases from combustion are removed from the combustion chamber by the exhaust valve.
When a car engine is running, what provides electrical current to recharge the battery and power the electrical system?
camshaft |
|
solenoid |
|
battery |
|
alternator |
Once the engine is running, the alternator provides electrical current to recharge the battery and power the electrical system. The alternator is driven by the engine's crankshaft and produces alternating current (AC) which is then fed through a rectifier bridge to convert it to the direct current (DC) required by the electrical system. A voltage regulator controls the output of the alternator to maintain a consistent voltage (approx. 14.5 volts) in the electrical system regardless of load.