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Engineering Mechanics problems

  • 1. The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is

  • Options
  • A. mr2/2
  • B. mr2/4
  • C. mr2/6
  • D. mr2/8
    • Discuss
  • 2. A non-reversible machine is also called a self-locking machine.

  • Options
  • A. Agree
  • B. Disagree
    • Discuss
  • 3. When two elastic bodies collide with each other,

  • Options
  • A. the two bodies will momentarily come to rest after collision
  • B. the two bodies tend to compress and deform at the surface of contact
  • C. the two bodies begin to regain their original shape
  • D. all of the above
    • Discuss
  • 4. The resultant of two equal forces P making an angle ?, is given by

  • Options
  • A. 2 P sin ? /2
  • B. 2 P cos ? /2
  • C. 2 P tan ? /2
  • D. 2 P cot ? /2
    • Discuss
  • 5. The maximum velocity of a particle moving with simple harmonic motion is

  • Options
  • A. ?
  • B. ?r
  • C. ?2r
  • D. ?/r
    • Discuss
  • 6. A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

  • Options
  • A. coplaner concurrent forces
  • B. coplaner non-concurrent forces
  • C. non-coplaner concurrent forces
  • D. none of these
    • Discuss
  • 8. Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 9. When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

  • Options
  • A. inward
  • B. outward
    • Discuss
  • 10. The horizontal range of a projectile (R) is given by

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss

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