Which of the following statements is correct about governor installation?

The correct statement regarding governor installation is that the jaw side of the governor must be plumb to the releasing carrier on the car. This alignment is critical for the proper functioning of the governor system. When the governor is plumbed correctly, it ensures that the mechanical components operate smoothly and that the governor can effectively monitor and respond to the speed of the elevator car. Proper alignment minimizes wear on the components and reduces the risk of malfunction, which is essential for safety and reliable operation.

In contrast, mounting the governor at an angle of 45 degrees would interfere with its ability to accurately measure speed and position, potentially leading to improper safety responses. Installing the governor below the car's top floor might also create issues with travel distance or improve accessibility, complicating maintenance or monitoring tasks. Additionally, performing the installation without regard to alignment would directly contradict the fundamental principles of safety and maintenance for elevator components, potentially leading to failures or unsafe conditions during operation.