6.In the slope deflection equations, the deformations are considered to be caused by i) bending moment ii) shear force iii) axial force The correct answer is

7.Castigliano's first theorem is applicable

8.Number of unknown internal forces in each member of a rigid jointed plane frame is

9.A rigid-jointed plane frame is stable and statically determinate if

10.The deflection at any point of a perfect frame can be obtained by applying a unit load at the joint in