Theory of Structures
A material is said to be perfectly elastic if

It does not regain its original shape at all
None of these
It regains its original shape on removal of the load
It regains its original shape partially on removal of the load

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Theory of Structures
The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying

A distributed load varying from zero at the left end to ? per unit horizontal run at the right end, is ? ?R/?
A uniformly distributed load ? per unit run over its entire span is 4/3 ?R/?
All of these
A uniformly distributed load ? per unit run over its right half span, is ? ?R/?

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