railway RRB JE (CBT I + CBT II) Mock Test 2024 Fluid Mechanics Laminar Flow Laminar Flow through Pipe
The Dupit’s equation tells, if the length of equivalent pipe is known, the diameter of equivalent pipe can be calculated or vice versa. According to this equation which of the following equation is correct?
1
L/d = L1/d1 + L2/d2 + L3/d3
2
L/d5 = L1/d15 + L2/d25 + L3/d35
3
L/d3 = L1/d13 + L2/d23 + L3/d33
4
L/d4 = L1/d14 + L2/d24 + L3/d34