Multiple choices check only one answer per group Principle o

Multiple choices (check only one answer per group) Principle of moments refers to the equation of balance of moments in static equilibrium, sigma M_i = 0; refers to the equality between the sum of moments of forces and moment of the sum of forces, sigma (r_i times F_i) = r_c times sigma F_i; both A and B; neither A nor B. Stress and strain each has six independent components in three dimensional space; are related to each other via Young\'s modulus and Poisson\'s ratio for any materials. Both A and B. Neither A nor B. Stress concentration (in the context of axial loading and axial deformation of a long structure, see Fig. 1) refers to an increase in average normal stress due to sharp decrease in the cross sectional area; refers to an increase in local normal stress near the edge of sharp decrease in the cross sectional area; refers to an increase in local normal stress in the cross section with sharp area decrease but away from the edge; None of the above. Which is the following statement is NOT true about the principle of superposition? It can be applied to problems of axial loading, torsion, and bending. It is only applicable to linear systems. It is not applicable to combined loading problems. It can be applied to mechanics as well as dynamic problems

Solution

(i) Option (C) {both (A) and (B)} Beacuse, both states the same.

(ii) Option (C) {Both (A) and (B)}. Because, both statements are true.

(iii) Option (B) is more suitable regarding deftnition of stress concentration.

(iv) Option (c), Because actually it can even applicable for combined loading problems.