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

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

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Structural Analysis
The effective and actual lengths of a cantilever are same if continuous at the support,

Unstrained against torsion at the support and free at the end
With partial restraint against torsion of the support and free at the end
None of these
Restrained against torsion at the support and free at the end

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