Final Concepts Flashcards
For cantilever beam, bending moment will be at
free end
In a beam, effect of bending stress is _____ effect of shear stress
greater than
The load which is distributed uniformly over the length of the beam, then the load is called
uniformly distributed load
Which type of beam, freely supported at two points, has one or both ends extending beyond these supports?
overhang beam
Area moment of inertia of the cross-section of the beam resist
the applied bending moment of the beam
A fixed beam is subjected to a uniformly distributed load over its entire span. The points of contra-flexure will occur on either side of the center at a distance of _____ from the center
(L/2 sqrt 3)
For a simply supported beam, where would absolute maximum shear occur?
Just next to one of ends
When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when
The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
The maximum bending moment due to a train of wheel loads on a simply supported girder
Always occurs under a wheel load
Floor loads are transmitted from slabs to which part in a floor girder system?
Floor beams
Assuming that we need to determine maximum shear at a point C of a beam, which of the following sentences will always be true for that condition?
One of the loads should be at a point in proximity to point C
For a cantilevered beam, where would absolute maximum shear occur?
Just next to fixed support
ILD means
Influence Line Diagram
For steel, the ultimate strength in shear as compared to ultimate strength in tension is:
2/3
If section modulus of a beam is increased, the bending stress in the beam will
decrease
The strength of beam section mainly depends on
section modulus
Neutral axis is the axis at which stress is
zero
In the case of a triangular section, the shear stress is maximum at the
height of h/2
An inverted T-section is subjected to a shear force F. The maximum shear stress will occur at
neutral axis of the section
A cantilever beam of T cross-section carries uniformly distributed load. Where does the maximum magnitude of bending stress occur?
at the bottom of the section
Two beams of equal cross-sectional area are subjected to equal bending moment. If one beam has a square cross-section and the other has a circular cross-section, then
square section beam will be stronger
In a simply supported beam, maximum shear stress in a triangular cross-section (altitude h) occurs at a distance:
h/6 from top the beam
In a simply supported rectangular beam loaded transversely, the maximum tensile bending stress occurs at
bottom fiber
In a cantilever beam, slope and deflection is maximum at
free end
Moment area method is used to calculate
deflection of beams
In the case of a beam simply supported at both ends, if the same load instead of being concentrated at center is distributed uniformly throughout the length, then deflection at center will get reduced by
3/8 times
Which of the following represents the bending at a section of the beam?
EI d^2y/dx^2
Bending moment at any section in a conjugate beam gives ____ in the actual beam
deflection
The slope and deflection at the center of a simple beam carrying a central point load are
zero and maximum
For a simply supported subjected to uniformly distributed load, if the length of the beam is doubled, deflection becomes ____ times
16
