Car Engine Quiz
Engine Quiz
A car engine's job is to:
convert fuel into heat
convert fuel into motion
convert fuel into exhaust
Correct: convert fuel into motion
There's a lot of heat in a car's engine -- and a lot of exhaust coming out of it -- but these are byproducts of the engine's true purpose. An engine has to use fuel to create motion to move the tires.
A car uses a four-stroke engine. The four strokes are:
intake, compression, ignition and exhaust
injection, rotation, ignition and exhaust
injection, carburetion, rotation and exhaust
Correct: intake, compression, ignition and exhaust
In the intake step, a cylinder gets some fuel and air to burn. Then, it compresses the fuel to make the ignition step -- the explosion -- more powerful. In the last step, the cylinder releases its exhaust. This is also known as the Otto cycle.
A device that works on the same principle as a car engine is:
a nuclear submarine
a giant robot
a spud gun
Correct:spud gun
In a both spud gun and a car engine, you ignite a small amount of fuel, releasing a large amount of energy. (And it's equally unwise to get in front of a moving car or a loaded spud gun.)
A crankshaft's job in an engine is to:
deliver fuel to the cylinders
change linear motion into rotational motion
keep cylinder heads in place
Correct: change linear motion into rotational motion
When gasoline ignites in a cylinder, the piston moves in a straight line. Your wheels, on the other hand, need to turn. The piston moves a connecting rod, which turns the crankshaft, producing the rotational motion.
A car's engine uses a series of small, regular explosions to run. The car doesn't move in stops and starts because:
The muffler dampens the explosions.
The crankshaft along with the flywheel store energy and release it slowly.
There are multiple cylinders, and the explosion in each one happens at a different time.
Correct: The crankshaft along with the flywheel store energy and release it slowly.
While a car's muffler does cut down on noise, an engine runs smoothly because the crankshaft along with the flywheel store energy and release it slowly.
There are three basic failures that can happen in an engine: bad fuel mix, lack of compression and:
lack of exhaust
lack of water
lack of spark
Correct: lack of spark
Lots of things can go wrong under the hood, but the big three in the engine involve fuel, compression and fire .
In a car engine's cylinder, valves let fuel in and exhaust out. The ______ moves these valves.
camshaft
timing belt
distributor
Correct: camshaft
A camshaft is a rotating rod that uses a series of lobes to open and close the valves. Most modern engines have overhead cams -- the camshaft is directly above the valves.
A turbocharger is:
a set of gears that makes the wheels turn faster
a turbine that compresses the air traveling into the engine
an injector that delivers fuel to the engine faster
Correct: a turbine that compresses the air traveling into the engine
Turbochargers and superchargers are both air compression systems. They pressurize the air moving into the engine, increasing the engine's power.
When you turn the key to a car, the starter motor:
sends electricity to the spark plugs, starting ignition
sends electricity to the fuel pump, forcing the car to start
spins the engine a few revolutions, starting the combustion process
Correct:spins the engine a few revolutions, starting the combustion process
The starter motor has a big job -- it has to overcome friction, cold weather and other factors to get your engine started. If it fails, nothing happens in the engine when you turn the key.
Power to run a car's radio, CD player, headlights and windshield wipers comes from the:
battery
motor
engine
Correct: battery
A large battery powers most of a car's accessories. An alternator uses the engine's power to keep the battery charged.
1. Auto parts are necessary for what purpose?
a. To keep a car running
b. To get a car to stop
c. To get into a car
d. All of the above
2. Which auto part is NOT needed to keep a car from overheating?
a. Fuel tank
b. Engine fans
c. Radiator
d. None of the above
3. Which auto part keeps the car engine from making excessive noise while running?
a. Serpentine belt
b. Undercarriage
c. Tail pipe
d. Muffler
4. Air conditioners have always been part of an automobile?
a. True
b. False
5. Which auto part keeps track of the mileage a person has driven?
a. Clock
b. Odometer
c. Radio
d. Computer
6. You can only purchase auto parts from the car's manufacturer?
a. True
b. False
7. What makes the power in the engine?
a. Air
b. Oil
c. Fuel
d. Ignited fuel
8. what happened when we increase cubic capicity (cc) in bike?
a. power increase
b. power decrease
c. weight increase
d. speed decrease
9. what is the use of a power steering in a car?
a. to keep the car stable
b. for easy manouvering
c. to keep the car moving in a straight track
d. to provide power to the wheels
10. Which of these shafts would not be found on a FWD car?
a. Camshaft
b. Power Take Off (PTO shaft)
c. Driveshaft
d. Crankshaft
11. What spins faster in a 4-Stroke engine?
a. Camshaft
b. Crankshaft
c. Belt
12. Which Air/Fuel Ration is Stoichiometric?
a. 12.5:1
b. 14.7:1
c. 16.3:1
d. 10.5:1
13. Which auto part mixes the air and fuel mixtures?
a. Alternator
b. Carburator
c. Starter
d. Compressor
14. Which part replaces the sparkplug of a petrol engine in a diesal engine?
a. Glow Plug
b. Exhaust valve
c. Carburator
d. Fuel injector
15. What is the main cause of tire damage?
a. Inadequate inflation
b. Hard braking and cornering
c. Pot holes
d. Speed
16. Diesel ignites at what compressed temperature?
a. 640
b. 1900
c. 509
d. 3500
17. name the 4 strokes of a 4 stroke engine
a. ignition intake exhaust compression
b. intake exhaust ignition compression
c. intake compression ignition exhaust
d. compression ignition exhaust intake
18. the bumpers on a car are there for what purpose
a. to protect pedestrians
b. to let you know when you are in park far enough
c. to protect body panels
d. to add weight