Automotive Fundamentals

In an automotive battery ______ and _______ are used to store the chemical energy.

• zinc and magnesium

• lithium and graphite

• leads and acid

Answer explanation

Zinc, magnesium, lithium, and graphite are all used in different types of batteries that are not used in a vehicle.

In a car battery the lead peroxide plate ________ electrons and is ________.

• gives up, oxidized

• accepts, oxidized

• gives up, reduced

• accepts, reduced

Answer explanation

The lead peroxide plate gives up electrons into the electrolyte. Anything that gives up electrons is the oxidizing agent in a redox reaction.

Tags

NGSS.HS-PS1-7

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

• Primary

• Secondary

Answer explanation

The alternator helps to reverse the chemical reaction that happens in the battery. It restores the metals to their original form and charges the battery.

Tags

NGSS.HS-PS1-4

True or False: The electrolyte in a car battery can burn the skin.

• True

• False

Answer explanation

The sulfuric acid can cure severe burns. Use a base, like baking soda, to neutralize it.

Which component of the engine management system is primarily responsible for controlling fuel injection timing and quantity?

• Oxygen sensor

• Engine Control Unit (ECU)

• Throttle body

• Fuel pump

What is the effect of a fouled spark plug on engine performance?

• It improves engine performance

• It has no effect

• It can cause the engine to run rough or misfire

• It increases the engine's horsepower

What is the primary purpose of a turbocharger in an engine?

• To increase fuel efficiency by reducing engine size

• To reduce emissions by controlling exhaust flow

• To increase engine power by forcing more air into the combustion chamber

• To cool the engine by circulating extra air

Tags

NGSS.HS-PS3-3

What distinguishes Direct Injection from Port Injection in fuel delivery systems?

• Direct Injection delivers fuel directly into the combustion chamber, while Port Injection delivers it into the intake manifold

• Port Injection is more fuel-efficient than Direct Injection

• Direct Injection is only used in diesel engines

• Port Injection uses higher pressure than Direct Injection

In an automotive engine, what is the primary function of the camshaft?

• To open and close the engine's valves

• To ignite the air-fuel mixture

• To cool the engine

• To pump oil through the engine

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

• Alternator

• Starter motor

• Battery

• Distributor