Q2. Two centrifugal pumps are connected in series in a given pumping system. Plot total head Ah against capacity Q pump and system curves and determine the operating points for (a) only pump 1 running (b) only pump 2 running (c) both pumps running on the basis of the following data: operating data for pump 1 Ah, m 50 46.5 44 39.5 36 32.5 28.5 49.5 48.5 50 48 42 Qs, m³/h 0 125 150 175 200 | 225 | 250 25 75 100 operating data for pump 2 Ah, m Q, m³ /h 0 39.5 39 25 75 30.5 28 37 100 40 38 36 34 32 25.5 50 125 150 175 200 225 250 Data for system Ah, m 35 37 40 43.5 46.5 50.5 125 54.5 59.5 66 72.5 80 es, m³ /h 0 25 75 175 200 225 250 50 100 150
Q2. Two centrifugal pumps are connected in series in a given pumping system. Plot total head Ah against capacity Q pump and system curves and determine the operating points for (a) only pump 1 running (b) only pump 2 running (c) both pumps running on the basis of the following data: operating data for pump 1 Ah, m 50 46.5 44 39.5 36 32.5 28.5 49.5 48.5 50 48 42 Qs, m³/h 0 125 150 175 200 | 225 | 250 25 75 100 operating data for pump 2 Ah, m Q, m³ /h 0 39.5 39 25 75 30.5 28 37 100 40 38 36 34 32 25.5 50 125 150 175 200 225 250 Data for system Ah, m 35 37 40 43.5 46.5 50.5 125 54.5 59.5 66 72.5 80 es, m³ /h 0 25 75 175 200 225 250 50 100 150
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