180 ml of mixture contains milk and water in the ratio of 5:4, respectively. If certain quantity of mixture is taken out and 12 ml of water is added into the remaining mixture then quantity of milk in the final mixture will be 50% of the total quantity of the final mixture. Find the percentage of mixture taken out.

12. A permanent-magnet ac machine is operating with P= 4, L=5mH, L=3mH, r, 192, 2=0.1 V-s. Determine k and Vas = 0.1cos(100) V-s. T = kw,.