Which of the following is an inversion of a double slider crank chain?

A. Oldham's coupling

B. Elliptical trammel

C. Scotch yoke mechanism

D. All of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  6. The partial balancing means
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  26. When the two elements of a pair have __________ when in motion, it is said to a lower pair.
  27. Which of the following is a higher pair?
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