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UPSC Civil Service Exam Questions - Engineering

Q1:

When a single point load W travels over a simply supported beam, what is shape of the graph for maximum positive or negative shear force ?

A A triangle with maximum ordinate W at centre and zero at two simple supports

B A triangle with maximum ordinate W at a support

C A rectangle with ordinate W

D A parabola with maximum ordinate W at centre of span and zero at supports

ANS:A - A triangle with maximum ordinate W at centre and zero at two simple supports

Then what the question is demanding?