AFCT Auto and Shop Information: Automotive Systems 2

Question 1

What is the primary function of a catalytic converter in an automobile's exhaust system?

Accepted Answer

To convert harmful exhaust gases into less toxic emissions

Answer

To reduce engine noise

Answer

To increase fuel efficiency

Answer

To cool exhaust gases before release

Question 2

In a hydraulic braking system, what happens when you press the brake pedal?

Accepted Answer

Hydraulic pressure is transmitted equally through brake fluid to all brake calipers

Answer

Brake fluid is compressed to create stopping force

Answer

A cable mechanically pulls the brake pads

Answer

An electric motor engages the brake rotors

Question 3

What component in an automatic transmission allows the engine to idle without stalling when the vehicle is stopped?

Accepted Answer

The torque converter

Answer

The clutch disc

Answer

The flywheel

Answer

The differential

Question 4

What is the purpose of the alternator in a vehicle's electrical system?

Accepted Answer

To convert mechanical energy into electrical energy to charge the battery and power accessories

Answer

To start the engine

Answer

To store electrical energy for later use

Answer

To regulate fuel injection timing

Question 5

What does the thermostat in a vehicle's cooling system control?

Accepted Answer

The flow of coolant between the engine and radiator based on temperature

Answer

The speed of the radiator fan

Answer

The amount of antifreeze in the system

Answer

The pressure inside the cooling system

Question 6

In a four-stroke gasoline engine, during which stroke does combustion occur?

Accepted Answer

Power stroke

Answer

Intake stroke

Answer

Compression stroke

Answer

Exhaust stroke