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Mechanical Engineering :: Engineering Mechanics

  1. If a number of forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are not in equilibrium.

  2. A.

    Agree

    B.

    Disagree


  3. The periodic time of a particle with simple harmonic motion is __________ proportional to the angular velocity.

  4. A.

    directly

    B.

    inversely


  5. The motion of a particle round a fixed axis is

  6. A.

    translatory

    B.

    rotary

    C.

    circular

    D.

    translatory as well as rotatry


  7. A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is

  8. A.

    m1/m2

    B.

    m1.g sin α

    C.

    m1.m2/m1+m2

    D.

    \( \frac { m1.m2.g(1 + sin\alpha) } { m1 + m2 } \)


  9. If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

  10. A.

    change

    B.

    does not change