Questions about determining the pump installation height; also questions related to elbows and the equivalent diameter of flow meters
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For the question about determining the pump’s installation height, there’s a bend involved; as for the question regarding the equivalent diameter of the flow meter, does it take into account the pressure losses at the inlet and outlet? For values of 1 and 0.5, the answer should be C; if not, then it’s A. I’m not sure
Check where the outlet is located; if there is a velocity head at the front end of the pipeline outlet, then there is no loss due to outlet resistance； The outlet is located at the rear end of the pipeline; there is no velocity head, so resistance loss must be taken into account. These two results are the same; there’s no need to calculate the velocity head and then the pressure loss at the outlet, as that would be redundant.
It should be considered as import/export resistance; there are examples on this in the principles of chemical engineering textbooks
When calculating the local friction loss, the length of the straight pipe is provided in the problem.