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Mr. Dubey • 100.64K Points
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Q. 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
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Explanation by: Mr. Dubey
When two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as lower pair.

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