SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Fluid Mechanics Flow Through Pipes Equivalent Pipe
Dupit’s equation is expressed for series-connected pipes as:
(where L1, L2, and L3 are lengths of pipe 1, 2 and 3, d1, d2, d3 are diameter of pipe 1, 2 and 3, L is equivalent length of pipe are D is equivalent diameter of pipe)
1
L/d5 = L1/d15 - L2/d25 - L3/d35
2
L/d5 = L1/d15 + L2/d25 + L3/d35
3
L/d5 = L1/d15 - L2/d25
4
L/d6 = L1/d16 + L2/d26 + L3/d36