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UPSC Civil Service Exam Questions - Engineering

Q1:

A symmetric parabolic arch of span 12m and rise 4 m has hinges at springings and at the crown. What is the influence line ordinate at the location 3m from one lower hinge ?

A 2.25 units

B 1.25 units

C 1.125 units

D 1.0 unit

ANS:A - 2.25 units

Wab/l for ild moment so for ordinate of moment a*b/L.