ASVAB Automotive Information Test 4

Question 1

What is the purpose of a catalytic converter's oxygen storage capacity?

Accepted Answer

Buffer air/fuel ratio fluctuations to maintain efficient conversion

Answer

The catalytic converter stores oxygen during lean conditions and releases it during rich conditions, smoothing out air/fuel variations to maintain optimal catalyst efficiency.

Question 2

A vehicle pulls to one side during braking. Which of the following is the MOST likely cause?

Accepted Answer

A seized or sticking brake caliper on one side

Answer

A seized caliper on one side applies more braking force to that wheel than the other, causing the vehicle to pull toward the side with greater braking force.

Question 3

What is engine displacement?

Accepted Answer

The total volume swept by all pistons in one complete revolution

Answer

Engine displacement is the total volume (in liters or cubic inches) swept by all pistons moving from BDC to TDC, commonly used to describe engine size.

Question 4

Which component in the charging system converts mechanical energy from the engine into electrical energy?

Accepted Answer

Alternator

Answer

The alternator is driven by a belt from the crankshaft and generates AC electricity, which is then rectified to DC to charge the battery and power vehicle systems.

Question 5

What does the term 'toe' refer to in wheel alignment?

Accepted Answer

The inward or outward angle of the tires as viewed from above

Answer

Toe describes whether the fronts of the tires point toward each other (toe-in) or away from each other (toe-out) when viewed from above, affecting tire wear and handling.

ASVAB - Armed Services Vocational Aptitude Battery Practice Test

ASVAB - Armed Services Vocational Aptitude Battery Practice Test

ASVAB Automotive Information Test 4