Final answer:
When the links of the Porter governor are equal in lengths, the effort of the governor remains constant.
Step-by-step explanation:
When the links of the Porter governor are equal in lengths, the effort of the governor remains constant.
This is because the equal lengths of the links ensure that the angles between the links and the vertical axis remain constant as the governor rotates. This, in turn, ensures that the centrifugal force acting on the links remains constant, resulting in a constant effort to maintain equilibrium.
Therefore, in this case, the effort of the Porter governor is not affected by the equal lengths of the links.