If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). ?
Correct answer: C. Q = Q1 + Q2 + Q3
- A. Q1 = Q2 = Q3
- B. V1 = V2 = V3
- C. Q = Q1 + Q2 + Q3
- D. f = f1 + f2 + f3
Explanation
For parallel branches, the pressure drop between the common inlet and outlet is the same, while the total flow is the sum of the branch flows: Q = Q₁ + Q₂ + Q₃. Equal velocities or flow rates occur only in special cases, such as identical branches.
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