GATE ME 2015 Set 1 — Question 16

MCQ+1 / -0.33MediumDarcy-Weisbach & Moody DiagramViscous & Pipe FlowFluid Mechanics

Fluid Mechanics → Viscous & Pipe Flow → Darcy-Weisbach & Moody Diagram

Last updated 5 September 2026

Question

Consider fully developed flow in a circular pipe with negligible entrance length effects. Assuming the mass flow rate, density and friction factor to be constant, if the length of the pipe is doubled and the diameter is halved, the head loss due to friction will increase by a factor of

h_f = \frac{f L v^2}{2 g D}

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h_f = \frac{f L v^2}{2 g D}

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