Pipe length vs Head loss due to friction - GATE ME '15 S1

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 A. 4 B. 16 C. 32 D. 64

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Thermodynamics Forum

Aug 18, 2022

what is poiseuille's law for pressure drop through a pipe with steady laminar horizontal flow

what is the relationship between head loss due to friction length and diameter

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 A. 4 B. 16 C. 32 D. 64