Light Vehicle Techniques Assessment

What is the primary function of a vehicle's braking system?

• To increase the vehicle's speed.

• To improve fuel efficiency.

• To slow down or stop the vehicle.

• To provide entertainment for passengers.

Name two types of braking systems commonly used in light vehicles.

• Anti-lock brakes

• Regenerative brakes

• Disc brakes, Drum brakes

• Hydraulic brakes

How does an anti-lock braking system (ABS) enhance safety?

• ABS increases stopping distance by locking the wheels during braking.

• ABS eliminates the need for brake maintenance entirely.

• ABS allows for faster acceleration while braking.

• ABS enhances safety by preventing wheel lock-up, allowing for better steering control and stability during braking.

What is the purpose of brake fluid in a braking system?

• To transmit force and enable the braking system to function.

• To lubricate the brake pads.

• To cool the braking system during use.

• To enhance the vehicle's fuel efficiency.

Explain the difference between disc brakes and drum brakes.

• Disc brakes are used in motorcycles, while drum brakes are used in cars.

• Disc brakes use a disc and pads for braking, while drum brakes use a drum and shoes.

• Disc brakes require more maintenance than drum brakes.

• Drum brakes provide better stopping power than disc brakes.

What are the advantages of using synthetic fuel over traditional gasoline?

• Increased availability of fossil fuels

• Lower production costs compared to synthetic fuel

• Advantages of synthetic fuel include reduced emissions, renewable production sources, and customizable properties.

• Higher energy density than synthetic fuel

How does fuel injection improve engine efficiency?

• Fuel injection solely relies on air intake for efficiency.

• Fuel injection increases the weight of the engine.

• Fuel injection enhances engine efficiency by optimizing fuel delivery and combustion.

• Fuel injection reduces the need for maintenance.

What is the role of a catalytic converter in a vehicle?

• The role of a catalytic converter in a vehicle is to reduce harmful emissions by converting toxic gases into less harmful substances.

• To enhance engine performance by boosting power output.

• To increase fuel efficiency by optimizing combustion.

• To store excess fuel for later use.

Describe the impact of ethanol-blended fuels on engine performance.

• Ethanol-blended fuels have no effect on engine performance or emissions.

• Ethanol-blended fuels can improve octane ratings and engine efficiency but may cause corrosion and energy content reduction.

• Ethanol-blended fuels are only beneficial for diesel engines.

• Ethanol-blended fuels decrease engine efficiency and increase fuel consumption.

What safety features are essential in modern vehicles?

• Sunroof, Bluetooth connectivity, leather seats

• Heated steering wheel, premium sound system, navigation

• Airbags, ABS, ESC, lane departure warning, adaptive cruise control, ADAS

• Backup camera, remote start, tinted windows