UPSC Civil Service Exam Questions - Engineering

Q1:

In a simply supported wooden beam under uniformly distributed load, a hole has to be made in the breadthwise direction at mid-span to provide a pipeline. From structural strength point of view, it would be advisable to have the hole made at

A the bottom

B the top

C mid-depth

D 1/4 depth either from the top or the bottom

ANS:C - mid-depth

At mid-depth, the stress zero.