In series-pipe problems A. the head loss is same through each pipe B. the discharge is same through each pipe C. a trial solution is not necessary D. the discharge through each pipe is added to obtain total discharge

The correct answer is: A. the head loss is same through each pipe.

In a series-pipe system, the total head loss is equal to the sum of the head losses in each pipe. The head loss in a pipe is proportional to the square of the flow rate, so if the flow rate is the same through each pipe, the head loss will also be the same.

Option B is incorrect because the discharge is not necessarily the same through each pipe. The discharge in a pipe is proportional to the pressure difference across the pipe, so if the pressure difference is different across each pipe, the discharge will also be different.

Option C is incorrect because a trial solution

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