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UPSC Civil Service Exam Questions

Q1:

Consider the following statements :
If a simply supported beam of uniform cross-section is subjected to a clockwise moment at the left support and an equal anticlockwise moment at the right support, then the
1. B.M.D. will be in the shape of a rectangle.
2. S.F.D. will be a straight line coinciding with the base.
3. deflection curve will be in the shape of a circular arc.
Of these statements :

A 1, 2 and 3 are correct

B 1 and 2 are correct

C 1 and 3 are correct

D 2 and 3 are correct

ANS:C - 1 and 3 are correct

A is the correct answer.

In this case support reactions will be zero. Hence SFD is a straight line.



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