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

To lubricate engine parts

Answer

To filter fuel

Answer

To regulate air intake

Question 2

What is the role of the alternator in a vehicle?

Accepted Answer

Recharge the battery and power electrical systems while running

Answer

Start the engine

Answer

Control fuel injection

Answer

Cool the engine

Question 3

What do spark plugs do in a gasoline engine?

Accepted Answer

Ignite the compressed air-fuel mixture in each cylinder

Answer

Filter the air-fuel mixture

Answer

Measure fuel pressure

Answer

Seal the combustion chamber

Question 4

What is the function of the oil pump?

Accepted Answer

Circulate oil throughout the engine to reduce friction

Answer

Inject oil into the fuel

Answer

Filter dirty oil

Answer

Measure oil pressure

Question 5

What is a four-stroke engine cycle?

Accepted Answer

Intake, Compression, Power, Exhaust

Answer

Intake, Compression, Exhaust, Power

Answer

Intake, Combustion, Compression, Exhaust

Answer

Fuel, Air, Fire, Exhaust

Question 6

What does the radiator do?

Accepted Answer

Cools engine coolant by dissipating heat into the air

Answer

Stores fuel

Answer

Filters exhaust gases

Answer

Pressurizes the fuel system

Question 7

What is the purpose of the timing belt or chain?

Accepted Answer

Synchronizes the crankshaft and camshaft rotation

Answer

Connects the battery to the starter

Answer

Controls gear shifts

Answer

Drives the water pump only

Question 8

What is the function of the catalytic converter?

Accepted Answer

Reduce harmful emissions from exhaust gases

Answer

Increase fuel efficiency

Answer

Cool exhaust gases

Answer

Muffle engine noise

Question 9

What does a torque wrench measure?

Accepted Answer

The rotational force applied to a fastener

Answer

The speed of tightening

Answer

The thread pitch of a bolt

Answer

The tensile strength of a bolt

Question 10

What is the function of the fuel injector?

Accepted Answer

Spray atomized fuel into the intake manifold or cylinder

Answer

Filter fuel before it enters the engine

Answer

Store fuel under pressure

Answer

Mix fuel with exhaust gases