Question

What is the total loss developed in a series of pipes?

(a) Sum of losses in each pipe only

(b) Sum of local losses only

(c) Sum of local losses plus the losses in each pipe

(d) Zero

This question was addressed to me in an interview.

I'm obligated to ask this question of Pipes in Series topic in portion Flow Through Pipes of Fluid Mechanics

Answer 1

The correct choice is (c) Sum of local losses plus the losses in each pipe

For explanation I would say: When the pipes of different diameters are connected in series from end to end to form a pipe line. The total loss so developed is equal to the sum of local losses plus the losses in each pipe. The local losses are developed at the connection point.