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UPSC Civil Service Exam Questions - Engineering

Q1:

The force in the member 'AB' of the truss shown in the given figure is

A 25 kN compressive

B
25 2 tensile

C
25 2kN compressive

D 25 kN tensile

ANS:B -

25 2 tensile

Here is the soltion;
tanx = 1.5/1.5.
x=45.
R1=R2=25.

At support,
F[AB]=R/sin45
=25√2 T.