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Structural Analysis - Interview Questions and Answers

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46. When a load crosses a through type Pratt truss in the direction left to right, the nature of force in any diagonal member in the left half of the span would
A. change from compression to tension
B. change from tension to compression
C. always be compression
D. always be tension
Explanation:
47. 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
A. only (i)
B. (i)and(ii)
C. (ii) and (iii)
D. (i), (ii) and (iii)
Explanation:
48. Castigliano's first theorem is applicable
A. for statically determinate structures only
B. when the system behaves elastically
C. only when principle of superposition is valid
D. none of the above
Explanation:
49. Number of unknown internal forces in each member of a rigid jointed plane frame is
A. 1
B. 2
C. 3
D. 6
Explanation:
50. A rigid-jointed plane frame is stable and statically determinate if
A. (m + r) = 2j
B. (m + r) = 3j
C. (3m + r) = 3j
D. (m + 3r) = 3j
Explanation: