Freshers India

For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust                        

For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust                        

For stable structures, one of the important properties of flexibility and stiffness matrices is that the elements on the main diagonal
i)of a stiffness matrix must be positive
ii)of a stiffness matrix must be negative
iii)of a flexibility matrix must be positive
iv) of a flexibility matrix must be negative
The correct answer is                        

If in a pin-jointed plane frame (m + r) > 2j, then the frame is
where m is number of members, r is reaction components and j is number of joints                        

If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is                        

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by