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UPSC Civil Service Exam Questions - Engineering

Q1:

Which one of the following is the reaction of the cantilever at B as shown in the figure ?

A 3/8 wl

B 5/8 wl

C 6/17 wl

D 3/21 wl

ANS:C - 6/17 wl

Answer C.
Wl^4/8EI- PL^3/3EI = PL^3/48EI.
P = 6/17WL.