For the following questions answer them individually
For the validity of principle of superposition, materials should behave in which manner?
Which of the following statements is true?
A. If a truss consists of a non-triangular element, then it will essentially be unstable.
B. In the above cases, instability is the most probable occurrence, but there are a lot of examples which are unstable.
Which of the following statements is true?
A. A roller is provided at end of a bridge truss to allow thermal expansion.
B. A roller provides freedom of deformation in horizontal plane in case of thermal expansion.
Given that J is no. of joints. B and R are no. of members and no. of reactions.
If B = 5, R = 4 and J = 4, then the truss is:-
