GATE Exam Questions - Engineering

Q1:

The strain energy stored in member AB of the pin-jointed truss shown in the below figure, when E and A are same for all members, is

A 2P2L/AE

B P2L/AE

C P2L/2AE

D Zero

ANS:C - P2L/2AE

Strain energy= 0.5 * P * DELTA.

DELTA= PL/(AE).