In the two port network shown below, if V1 & V2 are expressed in terms of I1 & I2 using the expression V1 = Z11I1 + Z12I2 & V2 = Z21I1 + Z22I2 then Z11 and Z22 are called
1
Open circuit impedance
2
Short circuit admittance
3
Trans impedance
4
Trans conductance