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  • Question

  • When the spring of a watch is wound, it will possess


  • Options
  • A. strain energy
  • B. kinetic energy
  • C. heat energy
  • D. electrical energy

  • Correct Answer
  • strain energy 

    • Engineering Mechanics problems

    Search Results

    • 1. In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

    • Options
    • A. less than
    • B. equal to
    • C. more than
      • Discuss
    • 2. The total energy possessed by a system of moving bodies

    • Options
    • A. is constant at every instant
    • B. varies from point to point
    • C. is maximum in the start and minimum at the end
    • D. is minimum in the start and maximum at the end
      • Discuss
    • 3. A couple produces

    • Options
    • A. translatory motion
    • B. rotational motion
    • C. combined translatory and rotational motion
    • D. none of the above
      • Discuss
    • 4. The static friction

    • Options
    • A. bears a constant ratio to the normal reaction between the two surfaces
    • B. is independent of the area of contact, between the two surfaces
    • C. always acts in a direction, opposite to that in which the body tends to move
    • D. all of the above
      • Discuss
    • 5. The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by(where r = Amplitude of motion, and y = Displacement of the particle from mean position.)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. The angle of inclination with the vertical is __________ if the cyclist is running at a faster speed than that when he is running at a slower speed.

    • Options
    • A. more
    • B. less
      • Discuss
    • 7. An irregular body may have more than one centre of gravity.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 8. The maximum height of a projectile on a horizontal plane, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 9. In a screw jack, the effort required to lift the load is given by(where W = Load lifted, ? = Helix angle, and ? = Angle of friction.)

    • Options
    • A. P = W tan (? - ?)
    • B. P = W tan (? + ?)
    • C. P = W tan (? - ?)
    • D. P = W cos (? + ?)
      • Discuss
    • 10. The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then

    • Options
    • A. P = Q
    • B. Q = R
    • C. Q = 2R
    • D. none of these
      • Discuss

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