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Railways NTPC (Technical Ability) Theory of Machines and Machine Design Question Bank Theory of Machines

  • question_answer
      Consider the following pairs of parts:
    1. Pair of gear in mesh
    2. Belt and pulley
    3. Cylinder and piston.
    4. Cam and follower
    Among these, the higher pairs are:

    A) 1 and 4            

    B) 2 and 4

    C) 1, 2 and 3                     

    D) 1, 2 and 4

    Correct Answer: D

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