Civil Engineering MCQAE Level Civil Engineering
The cable carrying a load of w kN/m of horizontal span is stretched between supports L m apart at same level and central dip h m. The maximum tension in cable is
Structural AnalysisStructural AnalysisMEDIUM
Choose the correct answer
A
wL^2/(8h) sqrt(1+(h/L)^2)
B
wL^2/(2) sqrt(1+(L/2h)^2)
C
wL^2/(8h) sqrt(1+(4h/L)^2)
D
wL^2/(2) sqrt(1+(L/4h)^2)
Correct Answer
C. wL^2/(8h) sqrt(1+(4h/L)^2)
Why is this the answer?
H = wL^2/(8h), vertical reaction = wL/2; Tmax = sqrt(H^2+V^2) = H sqrt(1+(4h/L)^2)
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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.