A 375W, 230 V, 50 Hz capacitor start single-phase induction motor has the following constants for the main and auxiliary windings (at starting):Z_m=(12.50+j15.75)Ω (main winding), Z_a=(24.50+j12.75)Ω (auxiliary winding). Neglecting the magnetizing branch, the value of the capacitance (inμF ) to be added in series with the auxiliary winding to obtain maximum torque at starting is ____.