Theory of Machines MCQ with Answers

206) A very sensitive governor will cause hunting.

Answer is:

Right

207) In a radial cam, the follower moves

Answer is:

in a direction perpendicular to the cam axis

208) The piston slide valve is an inside admission valve.

Answer is:

Yes

209) The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

Answer is:

same

210) Which of the following is a turning pair?

Answer is:

Shaft with collars at both ends fitted into a circular hole

Explanation:

When the two elements of a pair are connected in such a way that one can only turn or revolve about a fixed axis of another link, the pair is known as turning pair. A shaft with collars at both ends fitted into a circular hole, the crankshaft in a journal bearing in an engine, lathe spindle supported in head stock, cycle wheels turning over their axles etc. are the examples of turning pair. A turning pair also has a completely constrained motion.