S (stall position): In this particular issue the turbine velocity is zero and also the impeller is rotating; the performance during the stall position is minimum, all around 50%, which implies that 50 % of the power coming with the motor is misplaced by way of friction and dissipated as https://torque-converter-clutch77558.get-blogging.com/34505826/5-simple-statements-about-torque-converter-clutch-explained