ASVAB Automotive Information Practice Test 904917 Results

Your Results Global Average
Questions 5 5
Correct 0 3.13
Score 0% 63%

Review

1

Coolant is circulated through the engine by the:

61% Answer Correctly

camshaft

radiator

water pump

water jacket
Solution

The water pump is driven by a belt connected to the crankshaft and ensures that coolant moves through the engine and radiator.

2

For inline cylinder arrangements in an engine, how are the cylinders numbered?

50% Answer Correctly

alternating from the back of the engine to the front

sequentially from the back of the engine to the front

sequentially from the front of the engine to the back

alternating from the front of the engine to the back
Solution

Inline cylinder arrangements number cylinders sequentially (1, 2, 3, ...) front to rear.

3

When a car engine is running, what provides electrical current to recharge the battery and power the electrical system?

84% Answer Correctly

camshaft

solenoid

alternator

battery
Solution

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.

4

Spark plugs receive current from the:

52% Answer Correctly

battery

ignition coil

alternator

distributor
Solution

Spark plugs receive current from the distributor and use it to spark combustion in the combustion chamber of a cylinder.

5

Which of the following regulates the opening and closing of the intake and exhaust valves in each cylinder in time with the motion of the piston?

66% Answer Correctly

connecting arm

crankshaft

camshaft

halfshaft
Solution

The camshaft is linked to the crankshaft through a timing belt and regulates the opening and closing of the intake and exhaust valves in each cylinder in time with the motion of the piston. An engine designated OverHead Camshaft (OHC) locates the camshaft in the cylinder head. An engine with Double OverHead Camshaft (DOHC) has two camshafts, one to regulate the intake valves and one to regulate the exhaust valves.