Civil Engineering MCQAE Level Civil Engineering
A beam AB of length 10 m having both ends fixed is acted upon by a concentrated load of 10 tonnes at C at a distance of 4 m from A. The B.M. at C is
Strength of MaterialsStrength of MaterialsMEDIUM
Choose the correct answer
A
11.52 t-m (Hogging)
B
14.4 t-m (Hogging)
C
9.6 t-m (Sagging)
D
11.52 t-m (Sagging)
Correct Answer
D. 11.52 t-m (Sagging)
Why is this the answer?
For a fixed beam with load P at distance a from A and b from B (L=a+b), the moment at C is M_c = (P * a² * b²) / L³. Here P=10, a=4, b=6, L=10. M_c = (10 * 16 * 36) / 1000 = 5.76 t-m. The original options provided are inconsistent with standard structural analysis formulas for fixed beams.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.