Two Port Network

A two-por network is defined by the following pair of equaitons;

I₁ = 2V₁ +V₂ and I₂ = V₁ + V₂. Its impedance parameters (Z₁₁, Z₁₂, Z₂₁, Z₂₂) are given by

• 2,1,1,1

• 1,-1,-1,2

• 1,1,1,2

• 2,-1,-1,1

Which of the following is the precise condition for reciprocity for short circuit admittance parameters

• Y₁₁ = Y₂₂

• Z₁₁ = Z₂₂

• Y₁₂ = Y₂₁

• Z₁₂ = Z₂₁

If z-parameters are z₁₁ = 40, z₂₂ = 50 and z₁₂ = z₂₁ = 20, what would be the value of y₂₂ in the matrix form of y-parameters given below?

• 4/160

• 5/160

• 10/160

• 15/150

Which is the correct condition of symmetry observed in z-parameters?

• z₁₁ = z₂₂

• z₁₁ = z₁₂

• z₁₂ = z₂₂

• z₁₂ = z₂₁

How is the short circuit reverse transfer admittance (y₁₂) calculated in terms of current and voltage ratio?

• V_2/ I₁ (keeping I₂ = 0)

• I₂/ V₁ (keeping V₂ = 0)

• I₁/ V₂ (keeping V₁ = 0)

• V₁/ I₂ (keeping I₁ = 0)

Which among the following is regarded as short circuit forward transfer admittance?

• y₁₁

• y₁₂

• y₂₁

• y₂₂

Which elements act as an independent variables in Y-parameters?

• Current

• input port

• output port

• Voltage

What does the connectivity of energy source at the port of network known as?

• Driving Point

• Transfer Point

• Both a and b

• None of the above

In a two port network, Y11 is given by

• Z11/ $\Delta$  Y

• Z22/ $\Delta$  Z

• Z22/ $\Delta$  Y

• Z22/ $\Delta$  Z

The 2-port admittance matrix of the circuit shown is given by

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