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UPSC Civil Service Exam Questions

Q1:
The bending moments at point A, B, and C of the beam shown in the given figure will be:

A 10 kNm, 10 kNm and 10 kNm

B 10 kNm, 10 kNm and - 10 kNm

C 20 kNm, 10 kNm and - 10 kNm

D 10 kNm, - 10 kNm and 20 kNm

ANS:B - 10 kNm, 10 kNm and - 10 kNm

Let R is vertical. Reaction and taking moment about Hing=0
R*7.5 = 4 * 5 + 4 * 2.5
R= 4.

BM at A = 4 * 2.5 = 10.
At B = 10+0 = 10,
At c = 10 -4 * 5 = -10.



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