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Theory of Machines - Interview Questions and Answers

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46. If there are L number of links in a mechanism then number of possible inversions is equal to
A. L + 1
B. L - 1
C. L
D. L + 2
E. L - 2.
Explanation:
47. The example of spherical pair is
A. bolt andnut
B. lead screw of a lathe
C. ball and socket joint
D. ball bearing and roller bearing
E. none qf the above.
Explanation:
48. Kinematic pairs are those which have two elements that
A. have line contact
B. have surface contact
C. permit relative motion
D. are held together
E. have dynamic forces.
Explanation:
49. Cross head and guides form a
A. lower pair
B. higher pair
C. turning pair
D. rolling pair
E. sliding pair.
Explanation:
50. If two moving elements have surface contact in motion, such pair is known as
A. sliding pair
B. rolling pair
C. surface pair
D. lower pair
E. higher pair.
Explanation:
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