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Mechanical Engineering :: Engineering Mechanics

  1. The impact between two lead spheres is approximately equal to an __________ impact.

  2. A.

    elastic

    B.

    inelastic


  3. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

  4. A.

    nine times

    B.

    six times

    C.

    four times

    D.

    two times


  5. If a body is thrown upwards, then the gravitational acceleration is taken as zero.

  6. A.

    Correct

    B.

    Incorrect


  7. An ideal machine is one whose efficiency is

  8. A.

    between 60 and 70 %

    B.

    between 70 and 80%

    C.

    between 80 and 90%

    D.

    100%


  9. The energy possessed by a body, for doing work by virtue of its position, is called

  10. A.

    potential energy

    B.

    kinetic energy

    C.

    electrical energy

    D.

    chemical energy