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Theory of Machines - Interview Questions and Answers

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111. Whitworth quick return mechanism is obtained by inversion of
A. slider crank mechanism
B. kinematic chain
C. five link mechanism
D. roller cam mechanism
E. none of the above.
Explanation:
112. The main disadvantage of the sliding pair is that it is
A. bulky
B. wears rapidly
C. difficult to manufacture
D. (a) and (b) above
E. (a) and (c) above.
Explanation:
113. If the opposite links of a four bar linkage are equal, the links will always form a
A. triangle
B. rectangle
C. parallelogram
D. pentagon
E. trapezoid.
Explanation:
114. Hart mechanism has
A. eight links
B. six links
C. four links
D. twelve links
E. five links.
Explanation:
115. Higher pairs are those which have
A. point or line contact between the two elements when in motion
B. surface contact between the two elements when in motion
C. elements of pairs not held together mechanically
D. two elements that permit relative motion
E. none of the above.
Explanation:
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