ge network consists of a conduit, five pressurized pipes, and A sewage two pumps

Question

ge network consists of a conduit, five pressurized pipes, and A sewage two pumps that can be operated in tandem. The pumps pump sewage water from a wet well (W-1), then sewage is carried through pressurized pipes (P-2, P-3, P-6, P-7 and P-10) and is ultimately discharged into a manhole (MH-5). From MH-5, sewage flows by gravity through a circular concrete conduit (CO-9) and discharges at the outfal (0-3), as shown in the schematic diagram below obtained from a SewerCAD model. PMP-2 W. J-3 P-10 MH-5 0-3 CO-9 PMP-5

Explanation / Answer

1. False as rpm for both pumps are same and mass inflow and capacity of the pumps is same but the heads of both the pumps are different.

2. False as the head losses in both the branches are different.

3. True as the head loss is not half of the total flow from pump 5.

4.False as the head in pump 2is much more than that in pump 5 and the losses are not to the extent that they can equilize the net head gains.

5. False because net flow varies directly to the square of diameter as q=av.

6. False as head and diameter are directly relatable  

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