GATE 2023 Civil Engineering Q26

Question

In the frame shown in the figure (not to scale), all four members (AB, BC, CD, and AD) have the same length and same constant flexural rigidity. All the joints A, B, C, and D are rigid joints. The midpoints of AB, BC, CD, and AD, are denoted by E, F, G, and H, respectively. The frame is in unstable equilibrium under the shown forces of magnitude P acting at E and G. Which of the following statements is/are TRUE?

Answer

Shear forces at H and F are zero

Answer

Horizontal displacements at H and F are zero

Answer

Vertical displacements at H and F are zero

Answer

Slopes at E, F, G, and H are zero