UPSC Civil Service Exam Questions - Engineering

Q1:

At a cross-section of a beam, the maximum compressive stress at top is 800 kg/cm2 and its maximum tensile stress at bottom is 200 kg/cm2. The depth of cross-section is 10 cm. The depth of the neutral axis from the top of the section is n. The n is equal to

A 2 cm

B 4 cm

C 6 cm

D 8  cm

ANS:D - 8  cm

800/x = 200/10-x.
By solving we will get X=8cm.