Automotive Fundamentals

Why is it important for an Engine Control Unit (ECU) to monitor and adjust the air-to-fuel ratio?

• To ensure the vehicle can reach maximum speeds

• To maintain optimal engine temperature

• To optimize engine performance and fuel efficiency

• To increase the loudness of the exhaust system

What is the main advantage of using an Engine Control Unit (ECU) in modern vehicles?

• It allows for manual control of the engine's functions

• It increases the vehicle's top speed

• It optimizes engine performance and fuel efficiency

• It reduces the need for regular maintenance

Which type of fuel injection system uses a common rail to supply fuel to the injectors?

• Direct Injection

• Port Injection

• Sequential Fuel Injection

• Common Rail Direct Injection (CRDI)

A car battery is a ____ cell, which means it can be recharged.

• Secondary

• Primary

In a car battery the lead dioxide plate ______ electrons and is _____.

• accepts, reduced

• accepts, oxidized

• gives up, reduced

• gives up, oxidized

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What is the primary function of a catalytic converter in an automobile?

• To increase engine power

• To reduce exhaust emissions

• To improve fuel efficiency

• To enhance vehicle speed

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Which component in a car is responsible for converting chemical energy into electrical energy?

• Alternator

• Starter motor

• Battery

• Fuel pump

What is the main purpose of the anti-lock braking system (ABS) in vehicles?

• To increase braking power

• To prevent wheel lock-up during braking

• To reduce brake wear

• To enhance fuel efficiency

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In automotive terms, what does the acronym 'ECU' stand for?

• Engine Control Unit

• Electronic Control Unit

• Energy Control Unit

• Emission Control Unit

Which type of engine uses both gasoline and electric power to improve fuel efficiency?

• Diesel engine

• Hybrid engine

• Rotary engine

• Turbocharged engine

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