Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 26 (Q.No. 47)
47.
A bar of circular cross-section varies uniformly from a cross-section 2D to D. If extension of the bar is calculated treating it as a bar of average diameter, then the percentage error will be
Discussion:
3 comments Page 1 of 1.
Rahul said:
2 years ago
Yes, the correct option is A.
4PL/π*Ed1d2
4PL/π*E(2D^2).
Proportional to 1/2;
and PL/AE.
4PL/π*E(1.5x1.5D^2).
Proportional to 1/2.25.
error (1/2-1/2.25)/1/2.
11.11 per cent.
4PL/π*Ed1d2
4PL/π*E(2D^2).
Proportional to 1/2;
and PL/AE.
4PL/π*E(1.5x1.5D^2).
Proportional to 1/2.25.
error (1/2-1/2.25)/1/2.
11.11 per cent.
(1)
Deepinder Singh said:
5 years ago
Explain the answer.
Bunny said:
5 years ago
Option A is correct.
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