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Mechanical Engineering :: Engineering Mechanics

  1. The velocity ratio for the second system of pulleys is n.

  2. A.

    True

    B.

    False


  3. The law of motion involved in the recoil of gun is

  4. A.

    Newton's first law of motion

    B.

    Newton's second law of motion

    C.

    Newton's third law of motion

    D.

    none of these


  5. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.

  6. A.

    True

    B.

    False


  7. A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

  8. A.

    True

    B.

    False


  9. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

  10. A.

    β/2

    B.

    30° + β/2

    C.

    45° + β/2

    D.

    60° + β/2