Structural Analysis
Principle of superposition is applicable when

The action of applied forces will be affected by small deformations of the structure
None of these
Material obeys Hooke's law
Deflections are linear functions of applied forces

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

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

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