Calculation and result No. Speed (rpm) Suction Pressure (cm.Hg) Discharge Pressure (kg/cm) Rotameter reading ( L/min) Dynamometer Force (kg.) No. Suction Pressure, P1 (cm.Hg) Discharge Pressure, P2 (kg/cm) Pressure head at section 1 (m.) Pressure head at section 2 (m.) Z-Z (m.) H (m.) (2300rp m) Find pump head (H) No. Speed (rpm) Dynamometer Force (kg.) Moment arm, r (m.) Torque, T (Nm.) (2300rpm) T = Fr Find torque (T) No. Speed (rpm) Torque, T (Nm.) Shaft roatational Speed, (rad./s) Shaft input power, P (W.) (2300rpm) P = T Find power (P) No. Rotameter reading ( L/min) Discharge, Q (m/s) H (m.) Shaft input power, P (W.) Efficiency, (%) (2300rpm ) Find efficiency () No. H (m.) Shaft input power, P (W.) Discharge, Q (m/s) Shaft rotational Speed, (rad./s) Impeller Diameter, D (m.) (2300rp m) Find pump coefficients