S (stall stage): On this point the turbine pace is zero as well as impeller is rotating; the efficiency from the stall point is least, about 50%, which suggests that 50 percent of the ability coming through the motor is missing by friction and dissipated as heat; at this stage https://torque-converter-clutch37158.yomoblog.com/40567133/not-known-facts-about-torque-converter-clutch