logo

CuriousTab

CuriousTab

Discussion

Home ‣ Mechanical Engineering ‣ Engineering Mechanics Comments
  • Question

  • The linear velocity of a body rotating at ? rad / s along a circular path of radius r is given by


  • Options
  • A. ?/r
  • B. ?.r
  • C. ?2/r
  • D. ?2.r

  • Correct Answer
  • ?.r 

    • Engineering Mechanics problems

    Search Results

    • 1. The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

    • Options
    • A. mr2/3
    • B. 2mr2/3
    • C. 2mr2/5
    • D. 3mr2/5
      • Discuss
    • 2. According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through centre of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

    • Options
    • A. IP = IG + Ah2
    • B. IP = IG - Ah2
    • C. IP = IG / Ah2
    • D. IP = Ah2 / IG
      • Discuss
    • 3. The velocity ratio of a first system of pulleys with 4 pulleys is

    • Options
    • A. 4
    • B. 8
    • C. 16
    • D. 20
      • Discuss
    • 4. Efficiency of a screw jack is given by(where ? = Helix angle, and ? = Angle of friction.)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. The velocity ratio for the second system of pulleys is n.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The ideal angle of banking provided on the curves on roads depends upon

    • Options
    • A. weight of the vehicle
    • B. (velocity)2 of the vehicle
    • C. nature of the road surface
    • D. coefficient of friction between the road and vehicle contact point
      • Discuss
    • 7. The time taken by a particle for one complete oscillation is known as periodic time.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 8. The power developed by a body acted upon by a torque T newton metre (N - m) and revolving at ? radian/s is given by

    • Options
    • A. T.? (in watts)
    • B. T.?/60 (in watts)
    • C. T.?/75 (in kilowatts)
    • D. T.?/4500 (in kilowatts)
      • Discuss
    • 9. 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
    • 10. A non-reversible machine is also called a self-locking machine.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.