Pick up the correct statement from the following: A. In a loaded beam, the moment at which the first yield occurs is called yield moment B. In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment C. In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area D. All the above

The correct answer is D. All the above.

The yield moment is the moment at which the first yield occurs in a loaded beam. The plastic moment is the moment at which the entire section of the beam becomes fully plastic. In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area.

The yield moment is the maximum moment that a beam can withstand without any permanent deformation. The plastic moment is the maximum moment that a beam can withstand before it fails. The neutral axis is an imaginary line in a beam that divides the beam into two equal parts, one above the neutral axis and one below the neutral axis.

In a fully plastic stage of the beam, the entire section of the beam is in a state of plastic flow. This means that the material in the beam is flowing and deforming plastically. The neutral axis divides the section in two sections of equal area because the material in the beam is flowing and deforming plastically.

The yield moment, plastic moment, and neutral axis are all important concepts in structural engineering. They are used to design and analyze beams and other structural members.