Structural Analysis
Muller Breslau’s principle for obtaining influence lines is applicable to
i) trusses
ii) statically determinate beams and frames
iii) statically indeterminate structures, the material of which is elastic and follows Hooke’s law
iv) any statically indeterminate structure
The correct answer is

(i), (ii) and (iii)
(i), (ii) and (iv)
only (i)
(i) and (ii)

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Structural Analysis
When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when

The wheel load under consideration is midway between the centre of span and the centre of gravity of the load system
The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
The centre of gravity of the load system is midway between the centre of span and wheel load under consi-deration
None of these

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