Question

Let r represent the radius of rotation, then for stability of a spring controlled governor, which of the following relation regarding controlling force is true? (a, b are constants)

(a) Fc = ar-b

(b) Fc = ar +b

(c) Fc = ar

(d) Fc = a

This question was posed to me by my school principal while I was bunking the class.

Origin of the question is Controlling Force Diagram for a Spring-controlled Governor topic in division Governors of Machine Dynamics

Answer 1

Right choice is (a) Fc = ar-b

Explanation: The relation between the controlling force (FC) and the radius of rotation (r) for the stability of spring controlled governors is given by the following equation:

Fc = ar-b.