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Mechanical Engineering :: Machine Design

  1. A bolt of uniform strength can be developed by

  2. A.

    keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt

    B.

    keeping the core diameter smaller than the diameter of the unthreaded portion

    C.

    keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt

    D.

    none of the above


  3. The ratio of endurance limit in shear to the endurance limit in flexure is

  4. A.

    0.25

    B.

    0.40

    C.

    0.55

    D.

    0.70


  5. The lower deviation is the algebraic difference between the

  6. A.

    minimum limit and the basic size

    B.

    maximum limit and the basic size

    C.

    actual size and the corresponding basic size

    D.

    none of the above


  7. When plates are fastened by a rivet, the holes in the plates should be made by punching and reaming.

  8. A.

    Correct

    B.

    Incorrect


  9. When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

  10. A.

    grey colour

    B.

    white colour

    C.

    yellow colour

    D.

    brown colour