Theory of Machines MCQ with Answers

221) Which of the following is an example of a higher pair ?

Answer is:

all of these

Explanation:

Toothed gearing, Belt and rope drive and Ball and roller bearings are example of a higher pair.

222) Which of the following property of the instantaneous centre is correct ?

A rigid link rotates instantaneously relative to another link at the instantaneous centre for the configuration of the mechanism considered.

The two rigid links have no linear velocity relative to each other at the instantaneous centre.

The velocity of the instantaneous centre relative to any third rigid link is same whether the instantaneous centre is regarded as a point on the first rigid link or on the second rigid link.

all of the above

Answer is:

all of the above

223) Whitworth quick return motion mechanism is an inversion of a double slider crank chain.

Answer is:

Incorrect

224) The maximum gyroscopic couple acting on the ship tends to shear the holding down bolts.

Answer is:

Correct

225) In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to

Answer is:

221) Which of the following is an example of a higher pair ?

all of these

222) Which of the following property of the instantaneous centre is correct ?

all of the above

223) Whitworth quick return motion mechanism is an inversion of a double slider crank chain.

Incorrect

224) The maximum gyroscopic couple acting on the ship tends to shear the holding down bolts.

Correct

225) In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to

ensure uniform loading