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UPSC Civil Service Exam Questions - Engineering

Q1:

At what distance from left support of the beam, is the shear force zero ?

A 1 m

B 1.25 m

C 1.5 m

D 2.5 m

ANS:C - 1.5 m

Find the reactions Ra = 22.5 Rb = 7.5.
And then consider SF=0 at x distance,
so Ra - Wx = 0.
22.5 - 15x = 0.
x = 1.5.