ASVAB Automotive Information Practice Test 154296 Results

Your Results Global Average
Questions 5 5
Correct 0 3.40
Score 0% 68%

Review

1

The distributor is responsible for:

71% Answer Correctly

timing the spark and distributing it to the correct cylinder

utlizing battery power to start the engine

distributing power to the correct drive wheels

recharging the battery


Solution

The distributor is driven by the engine's camshaft and is responsible for timing the spark and distributing it to the correct cylinder. The distributor cap contains a rotor that connects the ignition coil (and its high voltage) to the proper cylinder at the proper point in the stroke cycle.


2

The __________ provides the appropriate power to vehicle wheels to maintain a given speed.

75% Answer Correctly

transmission

gearbox

ignition coil

transaxle


Solution

The transmission provides the appropriate power to vehicle wheels to maintain a given speed. The engine and the transmission have to be disconnected to shift gears and a manual transmission requires the driver to manually manage this disconnection (using a clutch) and to manually shift gears. An automatic transmission is essentially an automatic gear shifter and handles this process without driver input.


3

The right front wheel of your front-wheel drive car drops into a pothole and the left front wheel doesn't lose contact with the road. Which of the following is true?

75% Answer Correctly

your car has an independent rear suspension

your car has a rigid axle front suspension

your car has a rigid axle rear suspension

your car has an independent front suspension


Solution

An independent suspension allows the wheels on either side of an axle to move independently from each other. The fact that the left front wheel didn't move up in response to the right front wheel moving down is evidence of this.


4

The piston moves downward in the cylinder creating a vacuum that pulls an air-fuel mix into the combustion chamber. This describes which engine stroke?

68% Answer Correctly

compression

exhaust

power

intake


Solution

The four-stroke piston cycle of internal combustion engines starts with the piston at top of the cylinder head (top dead center or TDC) during the intake stroke. The piston moves downward in the cylinder creating a vacuum that pulls an air-fuel mix into the combustion chamber through the now open intake valve.


5

Which of the following statements about fuel injection is false?

51% Answer Correctly

atomizes fuel using high pressure and injects it into the engine

relies on suction to draw fuel into the engine

has replaced the carburetor as the primary fuel delivery system used in automotive engines

optimizes fuel delivery using various electronic engine sensors


Solution

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.