Question

Water flows through two smooth pipes with the same diameter and length as shown below. ipe is twice that through the first-pipe. Both flows are The flow rate through the s laminar and fully _developed. Circle the letter of the statement that is correct about the pressure drop (pressure difference over the pipe length). (a) Pipe 1 has the higher pressure drop. (b) Pipe 2 has the higher pressure drop. (c) Pipes 1 and 2 have the same pressure drop. (d) T here is not enough information to answer the question.

Answer 1

Answer:

The right answer is (d)

Explanation:

The pressure drop in smooth pipes with laminar flow is determined by the resistance of the fluid to flow, which is controlled by Reynolds's number. At higher Re, higher drop. But in this case, we have no information about the speed of the fluid in each pipe, and the ipe is not related to that speed. therefore we don´t have the information to say that any of the other options are the right ones