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Mechanical Engineering :: Machine Design

  1. While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

  2. A.

    both the ends fixed

    B.

    both the ends hinged

    C.

    one end fixed and the other end hinged

    D.

    one end fixed and the other end free


  3. When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

  4. A.

    bending stress only

    B.

    a combination of torsional shear stress and bending

    C.

    direct shear stress only

    D.

    a combination of bending stress and direct shear stress


  5. In a journal bearing, the load on the bearing is __________ to the axis of the journal.

  6. A.

    parallel

    B.

    perpendicular


  7. An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called

  8. A.

    addendum circle

    B.

    dedendum circle

    C.

    pitch circle

    D.

    clearance circle


  9. When the frictional force helps to apply the brake, then the brake is said to be self-energizing brake.

  10. A.

    Correct

    B.

    Incorrect