ASVAB Automotive Information Test 2

Question 1

What is the primary function of an alternator in a vehicle?

Accepted Answer

Convert mechanical energy to electrical energy

Answer

The alternator converts mechanical energy from the engine into electrical energy to power the vehicle's electrical systems and recharge the battery while the engine is running.

Question 2

Which type of oil viscosity rating is best suited for cold-climate operation?

Accepted Answer

5W-30

Answer

5W-30 oil has a lower cold-temperature viscosity rating (the '5W'), meaning it flows more easily when cold, making it ideal for cold-climate operation and easier cold starts.

Question 3

What does the 'TDC' marking on an engine mean?

Accepted Answer

Top Dead Center

Answer

TDC stands for Top Dead Center, which is the position of a piston at the very top of its stroke in the cylinder, where it has reached its highest point of travel.

Question 4

What is the purpose of a vehicle's catalytic converter?

Accepted Answer

Reduce harmful exhaust emissions

Answer

A catalytic converter reduces harmful exhaust emissions by using chemical reactions to convert toxic pollutants like carbon monoxide, hydrocarbons, and nitrogen oxides into less harmful substances.

Question 5

What system in a modern vehicle prevents wheels from locking up during hard braking?

Accepted Answer

Anti-lock Braking System (ABS)

Answer

The Anti-lock Braking System (ABS) prevents wheels from locking up during hard braking by rapidly modulating brake pressure, allowing the driver to maintain steering control.

ASVAB - Armed Services Vocational Aptitude Battery Practice Test

ASVAB - Armed Services Vocational Aptitude Battery Practice Test

ASVAB Automotive Information Test 2