153 electrics quiz

Which of the following is a component related to light vehicle electrical units?

• Carburetor

• Alternator

• Brake pads

• Fuel injector

Answer explanation

The alternator is a key component in light vehicle electrical systems, generating electricity to power the vehicle's electrical systems and charge the battery. The other options, like carburetors and fuel injectors, are related to fuel systems.

What is a key topic covered in the Level 2 Diploma and Certificate in Light Vehicle Maintenance and Repair Principles?

• Aerodynamics

• Electrical principles

• Engine tuning

• Suspension systems

Answer explanation

The Level 2 Diploma and Certificate in Light Vehicle Maintenance and Repair Principles covers essential topics, including electrical principles, which are crucial for understanding vehicle systems and diagnostics.

Which of the following is associated with vehicle lighting systems?

• Battery

• Transmission

• Lighting

• Exhaust

Answer explanation

The correct choice is 'Lighting' as it directly relates to vehicle lighting systems, which include headlights, taillights, and other illumination components. The other options, such as Battery, Transmission, and Exhaust, are not specifically associated with lighting.

What is a component involved in the starting process of a vehicle?

• Alternator

• Starter motor

• Radiator

• Muffler

Answer explanation

The starter motor is a crucial component in starting a vehicle, as it engages the engine to initiate the combustion process. The alternator, radiator, and muffler serve different functions and are not involved in starting the vehicle.

What type of protective workwear should be used when working with lead acid batteries?

• Gloves, goggles, acid-resistant apron, and protective shoes

• Helmet, safety vest, and steel-toed boots

• Lab coat, face shield, and rubber boots

• Earplugs, dust mask, and safety glasses

Answer explanation

When working with lead acid batteries, it is essential to wear gloves, goggles, an acid-resistant apron, and protective shoes to prevent exposure to harmful acids and ensure safety.

What should you do if you spill acid solution on your skin?

• Wipe it off with a cloth

• Dilute with a large amount of water very quickly

• Apply a bandage immediately

• Use soap and scrub vigorously

Answer explanation

If you spill acid on your skin, the best immediate action is to dilute it with a large amount of water very quickly. This helps to neutralize the acid and minimize skin damage. Other options like wiping or scrubbing can worsen the injury.

What is a recommended tip when removing a battery terminal?

• Use a hammer to loosen the terminal

• Blow across the battery to remove any hydrogen gases

• Pull the terminal off with bare hands

• Use a screwdriver to pry it off

Answer explanation

Blowing across the battery helps disperse any hydrogen gases that may have accumulated, reducing the risk of explosion when removing the terminal. This is a crucial safety step, unlike the other options which are unsafe.

Which terminal should be removed first and fitted last to prevent a short circuit?

• Positive terminal

• Neutral terminal

• Negative terminal

• Ground terminal

Answer explanation

The negative terminal should be removed first and fitted last to prevent a short circuit. This minimizes the risk of creating a path for current to flow, which can happen if the positive terminal is connected while the negative is still attached.

What is the composition of a Sealed Lead Acid Battery?

• 50% sulfuric acid to 50% water

• 35% sulfuric acid to 65% water

• 40% sulfuric acid to 60% water

• 30% sulfuric acid to 70% water

Answer explanation

A Sealed Lead Acid Battery typically contains a composition of 35% sulfuric acid and 65% water, which is optimal for its chemical reactions and performance.

What is the purpose of a lead acid battery's starting/cranking feature?

• To provide a long-lasting energy supply

• To give a quick but short energy burst

• To maintain a constant energy flow

• To store energy for later use

Answer explanation

The starting/cranking feature of a lead acid battery is designed to give a quick but short energy burst, which is essential for starting an engine. This allows the engine to turn over and start efficiently.