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UPSC Civil Service Exam Questions - Engineering

Q1:

The degree of indeterminacy of the beam given in the given figure is

A zero

B one

C two

D three

ANS:D - three

Indeterminacy = no.of unknown forces - no. of equilibrium equation.
No.of unknown forces = 3(for fixed) +2(one for each roller support).
Indeterminacy = 5 - 4(3(no. of equilibrium equation) + 1 for internal hinge).
= 1.