Plastic hinge in a section is caused

Partial derivative of strain energy gives

The ratio of the moment of inertia of a circular plate and a square plate for equal depth is

The shape of bending moment diagram over the length of a beam, having no external load is

Unequal settlement in the supports of statically indeterminate structure develop

Which of the following section is the most efficient in carrying bending moments ?

The slope and the deflection at a section in a loaded beam cannot be found out by:

The shear force and bending moment are related by

Bending moment at any section in a conjugate beam gives in the actual beam: