Structural Analysis
The Castigliano's second theorem can be used to compute deflections

At the point under the load only
For beams and frames only
For any type of structure
In statically determinate structures only

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Structural Analysis
The effective length of lacing is the distance

Between the inner ends of effective lengths of welds connecting the members
0.7 of the distance between the inner end rivets of the bar for double lacing
Between the inner end rivets of the bar for single lacing
All of these

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

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