logo

CuriousTab

CuriousTab

Discussion

Home ‣ Mechanical Engineering ‣ Engineering Mechanics Comments
  • Question

  • Which of the following statement is incorrect?


  • Options
  • A. A force acting in the opposite direction to the motion of the body is called force of friction.
  • B. The ratio of the limiting friction to the normal reaction is called coefficient of friction.
  • C. A machine whose efficiency is 100% is known as an ideal machine.
  • D. The velocity ratio of a machine is the ratio of load lifted to the effort applied.

  • Correct Answer
  • The velocity ratio of a machine is the ratio of load lifted to the effort applied. 

    • Engineering Mechanics problems

    Search Results

    • 1. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,

    • Options
    • A. P + m.a = 0
    • B. P - m.a = 0
    • C. P x m.a = 0
    • D. P/m.a = 0
      • Discuss
    • 2. The energy possessed by a body, for doing work by virtue of its position, is called

    • Options
    • A. potential energy
    • B. kinetic energy
    • C. electrical energy
    • D. chemical energy
      • Discuss
    • 3. If a body is thrown upwards, then the gravitational acceleration is taken as zero.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 4. If three forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, the forces shall be in equilibrium.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The maximum mechanical advantage of a lifting machine is

    • Options
    • A. 1 + m
    • B. 1 - m
    • C. 1 / m
    • D. m
      • Discuss
    • 6. The potential energy stored by a spring in compression, is called strain energy.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 7. In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.

    • Options
    • A. half
    • B. equal to
    • C. double
      • Discuss
    • 8. The forces, which meet at one point and their lines of action also lie on the same plane, are known as

    • Options
    • A. coplaner concurrent forces
    • B. coplaner non-concurrent forces
    • C. non-coplaner concurrent forces
    • D. non-coplaner non-concurrent forces
      • Discuss
    • 9. Which of the following are vector quantities?

    • Options
    • A. Angular displacement
    • B. Angular velocity
    • C. Angular acceleration
    • D. all of these
      • Discuss
    • 10. An ideal machine is one whose efficiency is

    • Options
    • A. between 60 and 70 %
    • B. between 70 and 80%
    • C. between 80 and 90%
    • D. 100%
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.