In elevator systems, which of the following components controls the speed of the elevator car?

The governor is a critical component in elevator systems that specifically controls the speed of the elevator car. Its primary function is to ensure that the elevator operates within safe speed limits. If the elevator car exceeds a predetermined speed, the governor activates a safety mechanism that can engage the brakes, arresting the car's motion to prevent an unsafe condition, such as free fall.

This speed regulation is essential not only for the safety of passengers but also for the overall integrity and functionality of the elevator system. The governor continuously monitors the speed during operation, making it a fundamental safety feature in modern elevator designs.

In contrast, other components like the counterweight serve to balance the elevator car, reducing the amount of energy consumed by the motor but do not directly control speed. The interlock is a safety device that ensures the elevator doors are secure before the car can move, whereas a cylinder, typically found in hydraulic elevators, functions to provide lifting power but does not manage speed.