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UPSC Civil Service Exam Questions - Engineering

Q1:

A beam carries a uniformly distributed load throughout its length. In which of the following configurations will the strain energy be maximum ?

A Cantilever

B Simply supported beam

C Propped cantilever

D Fixed beam

ANS:A - Cantilever

D is the correct option strain energy is the bending moment in the beam;

Due to UDL max BM for fixed is wl2/12.
For cantilever wl2/2,
For simply supported wl2/8.
And for prop cantilever also wl2/8.
So, highest in the fixed beam.