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UPSC Civil Service Exam Questions - Engineering

Q1:

Consider the following assumptions in the analysis of a plane truss
1. The individual members are straight.
2. The individual members are connected by frictionless hinges.
3. The loads and reactions act only at the joints.
Of these assumptions :

A 1 and 2 are valid

B 1 and 3 are valid

C 2 and 3 are valid

D 1, 2 and 3 are valid

ANS:B - 1 and 3 are valid

Members are connected by frictionless pins.