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Class 2 (2nd Engineer) MEKM 📅 Mar 2023

Exam Question

With reference to mechanical/hydraulic governors explain: (16)

(a) Why flyweights are driven at a higher rotational speed than the engine;

(b) How dead band effects are reduced;

(c) How hunting is reduced;

(d) How the output torque is increased.

Exam question diagram

Reference Answer

(a) Why flyweights are driven at a higher rotational speed than the engine
The operation of flyweights in a governor relies on the principle of centrifugal force, which governs their outward movement from the centerline. The centrifugal force is given by:
$$F=m\omega^2r$$
Where:

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