+1 vote
in Machine Dynamics by (34.3k points)
A Porter governor has equal arms each of length 250 mm and pivoted on the axis of rotation. Each ball has a mass of 5 kg and the central load has a mass on the sleeve of 25 kg. The radius of rotation of the ball is 150 mm when the governor begins to lift and 200 mm when the governor is at maximum speed. Neglecting friction at the sleeve, find the sleeve lift.

(a) 0.2m

(b) 0.1m

(c) 0.5m

(d) 200 mm

The question was asked during an online interview.

My question comes from Effort and Power of a Porter Governor in portion Governors of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Right choice is (b) 0.1m

The best I can explain: For minimum position, h1 = 200 mm

For maximum position,

h2=150 mm

sleeve lift = 2(h1 – h2) = 0.1m.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community
...