Example 2: Find the three inductance appearing in the T equivalent of the transformer shown in Fig, if L2=4H and the input inductance at A-B is 6H with C-D open-circuited, and 2H with C-D short-circuited L+M Lr+M M 日 日 Solution: C-D open-circuited L,=4H LAD=L +MM6 L1=6H C-D short-circuited L=6+M+ 4+M)(-M) =2∴M=4H 4+M-M L+M=10H,L,+M=8H,-M=-4HExample 2: Find the three inductance appearing in the T equivalent of the transformer shown in Fig., if L2=4H and the input inductance at A-B is 6H with C-D open-circuited, and 2H with C-D short-circuited. Solution: C-D open-circuited L2 = 4H LAB=L1+M-M=6 L1 = 6H C-D short-circuited M H M M M M LAB M 2 4 4 (4 )( ) 6 =  = + − + − = + + L1+M=10H, L2+M= 8H, -M= - 4H