What is the primary function of hydraulic brakes in vehicles?

The primary function of hydraulic brakes in vehicles is to transfer force from the brake pedal to the brake pads. When the driver presses the brake pedal, this action activates the hydraulic system, which utilizes fluid to transfer the force generated by the pedal to the brake pads. This pressure causes the brake pads to clamp down on the brake disc or drum, creating friction that slows down or stops the vehicle.

Hydraulic brakes are effective because they multiply the force applied on the brake pedal, allowing for efficient braking even with less effort from the driver. The use of hydraulic fluid enables a smooth transmission of force and helps in dissipating heat generated during braking, leading to consistent and reliable brake performance.

Other options do not relate to the primary function of hydraulic brakes. Converting mechanical energy to electrical energy pertains to generators or alternators, increasing fuel efficiency is a characteristic related to engine performance, and regulating engine speed is associated with throttle controls and not with braking systems.