ASVAB Auto and Shop: Engine Systems and Repair

Question 1

What is the purpose of the engine's cooling system?

Accepted Answer

To prevent the engine from overheating

Answer

The cooling system maintains proper engine temperature to prevent overheating.

Question 2

What is the role of the alternator in a vehicle?

Accepted Answer

Recharge the battery and power electrical systems while running

Answer

The alternator generates electricity to recharge the battery and power accessories while the engine runs.

Question 3

What do spark plugs do in a gasoline engine?

Accepted Answer

Ignite the compressed air-fuel mixture in each cylinder

Answer

Spark plugs produce an electrical spark that ignites the air-fuel mixture at the right moment.

Question 4

What is the function of the oil pump?

Accepted Answer

Circulate oil throughout the engine to reduce friction

Answer

The oil pump circulates engine oil to lubricate moving parts and reduce friction and heat.

Question 5

What is a four-stroke engine cycle?

Accepted Answer

Intake, Compression, Power, Exhaust

Answer

The four strokes are Intake, Compression, Power (combustion), and Exhaust.

ASVAB - Armed Services Vocational Aptitude Battery Practice Test