| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.98 |
| Score | 0% | 60% |
Engines with radial cylinder configurations are most common in:
tank engines |
|
aircraft engines |
|
train engines |
|
heavy truck engines |
A radial arrangement places cylinders in a circle around the crankshaft and is used almost exclusively in aircraft engines.
Which of the following regulates the flow of coolant through the radiator?
crankshaft |
|
water pump |
|
thermostat |
|
water jacket |
The thermostat controls coolant (and, through it, engine) temperature by regulating the flow of coolant through the radiator. A bypass tube allows coolant to bypass the radiator and flow back into the water pump when its temperature is low enough that the thermostat is closed.
Which of the following is a relay that connects the battery to the starter motor when the ignition key is turned?
solenoid |
|
actuator |
|
alternator |
|
ignition coil |
The cylindrical solenoid is a relay that safely connects the high amperage battery to the starter motor when the ignition key is turned. This current then allows the engine to turn at a high enough speed to start.
The air-fuel mixture is delivered to the combustion chamber by a(n):
intake valve |
|
exhaust valve |
|
fuel valve |
|
air 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.
Which of the following enables heat transfer from the cylinder heads to the coolant?
water sleeve |
|
water pump |
|
water jacket |
|
radiator |
A water jacket is a coolant-filled casing that allows heat transfer from the engine block and cylinder heads to the liquid coolant.