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Theory of Machines - Interview Questions and Answers

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71. Oldham's coupling is the
A. second inversion of double slider crank chain
B. third inversion of double slider crank chain
C. second inversion of single slider crank chain
D. third inversion of slider crank chain
E. fourth inversion of double slider crank chain.
Explanation:
72. The lower pair is a
A. open pair
B. closed pair
C. sliding pair
D. point contact pair
E. does not exist.
Explanation:
73. Sense of tangential acceleration of a link
A. is same as that of velocity
B. is opposite to that of velocity
C. could be either same or opposite to velocity
D. is perpendicular to that of velocity
E. none of the above.
Explanation:
74. Elements of pairs held together mechanically is known as
A. closed pair
B. open pair
C. mechanical pair
D. rolling pair
E. none of the above.
Explanation:
75. A completely constrained motion can be transmitted with .
A. 1 link with pin joints
B. 2 links with pin joints
C. 3 links with pin joints
D. 4 links with pin joints
E. all of the above.
Explanation:
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