1. Calculation and result

2. No. Speed (rpm) Suction Pressure (cm.Hg) Discharge Pressure (kg/cm²) Rotameter reading ( L/min) Dynamometer Force (kg.) 1230101.25101 2229501.2200.95 3230001.18300.95 42300-2.51.1401.05 52313-51501.1 62307-8.750.9601.1 72295-8.750.7701.1 82299-11.250.6801.25

3. No. Suction Pressure, P1 (cm.Hg) Discharge Pressure, P2 (kg/cm²) Pressure head at section 1 (m.) Pressure head at section 2 (m.) Z₂-Z₁ (m.) H (m.) (2300rp m) 0.0001.2500.00012.5510.20012.751 0.0001.2000.00012.0490.20012.249 0.0001.1800.00011.8480.20012.048 -2.5001.100-0.34011.0450.20011.585 -5.0001.000-0.68010.0410.20010.921 -8.7500.900-1.1909.0370.20010.427 -8.7500.700-1.1907.0290.2008.419 -11.2500.600-1.5306.0250.2007.755 Find pump head (H)

4. No. Speed (rpm) Dynamometer Force (kg.) Moment arm, r (m.) Torque, T (Nm.) (2300rpm) 23011.0000.09860.967 22950.9500.09860.919 23000.9500.09860.919 23001.0500.09861.016 23131.1000.09861.064 23071.1000.09861.064 22951.1000.09861.064 22991.2500.09861.209 T = F×r Find torque (T)

5. No. Speed (rpm) Torque, T (Nm.) Shaft roatational Speed, Ѡ (rad./s) Shaft input power, P (W.) (2300rpm) 23010.967240.915233.029 22950.919240.287220.800 23000.919240.810221.281 23001.016240.810244.574 23131.064242.171257.668 23071.064241.543257.000 22951.064240.287255.663 22991.209240.705291.033 P = T×ω Find power (P)

6. 38 0.0011 9

7. No. Rotameter reading ( L/min) Discharge, Q (m³/s) H (m.) Shaft input power, P (W.) Efficiency, ƞ (%) (2300rpm ) 100.0001712.751233.0298.910 200.0003312.249220.80018.067 300.0005012.048221.28126.598 400.0006711.585244.57430.853 500.0008310.921257.66834.507 600.0010010.427257.00039.638 700.001178.419255.66337.533 800.001337.755291.03334.710 Find efficiency (ƞ)

9. No. H (m.) Shaft input power, P (W.) Discharge, Q (m³/s) Shaft rotational Speed, Ѡ (rad./s) Impeller Diameter, D (m.) (2300rp m) 12.75 1 233.0290.00017240.9150.13 0.127 5 0.000 3 0.0005 12.24 9 220.8000.00033240.2870.13 0.123 1 0.000 6 0.0004 12.04 8 221.2810.00050240.8100.13 0.120 6 0.000 9 0.0004 11.58 5 244.5740.00067240.8100.13 0.116 0 0.001 3 0.0005 10.92 1 257.6680.00083242.1710.13 0.108 1 0.001 6 0.0005 10.42 7 257.0000.00100241.5430.13 0.103 7 0.001 9 0.0005 8.419255.6630.00117240.2870.13 0.084 6 0.002 2 0.0005 7.755291.0330.00133240.7050.13 0.077 7 0.002 5 0.0006 Find pump coefficients

10. 0.37 0.09