GATE Networks, Signals and Systems: Two-Port Networks and Wye-Delta Transformation – Previous Year Questions

12 GATE previous year questions on Two-Port Networks and Wye-Delta Transformation (Networks, Signals and Systems, Electronics and Communication Engineering) with answers and explanations, from every paper.

1. GATE 2016 EC Q19 (1 mark, Multiple choice) – Consider a two-port network with the transmission matrix: T = pmatrix A & B \\ C & D pmatrix. If the network is reciprocal, then
2. GATE 2018 EC Q35 (1 mark, Numerical answer) – The ABCD matrix for a two-port network is defined by: bmatrixV 1\ 1bmatrix=bmatrixA&B\&DbmatrixbmatrixV 2\\-I 2bmatrix The parameter B for the given…
3. GATE 2019 EC Q14 (1 mark, Multiple choice) – Consider the two-port resistive network shown in the figure. When an excitation of 5 V is applied across Port 1, and Port 2 is shorted, the current…
4. GATE 2020 EC Q25 (1 mark, Numerical answer) – In the given circuit, the two-port network has the impedance matrix [Z]=bmatrix40&60\\60&120bmatrix. The value of Z L for which maximum power is…
5. GATE 2020 EC Q56 (2 marks, Numerical answer) – For a 2-port network consisting of an ideal lossless transformer, the parameter S 21 (rounded off to two decimal places) for a reference impedance of…
6. GATE 2021 EC Q39 (2 marks, Multiple choice) – Consider the two-port network shown in the figure. The admittance parameters, in siemens, are
7. GATE 2022 EC Q54 (2 marks, Numerical answer) – A linear 2-port network is shown in Fig. (a). An ideal DC voltage source of 10 V is connected across Port 1. A variable resistance R is connected…
8. GATE 2023 EC Q33 (1 mark, Numerical answer) – For the two port network shown below, the [Y]-parameters is given as [Y]=1100bmatrix2&-1\\-1&43bmatrixS. The value of load impedance Z L, in Ω, for…
9. GATE 2023 EC Q46 (2 marks, Multiple choice) – The h-parameters of a two port network are shown below. The condition for the maximum small signal voltage gain V outV s is
10. GATE 2024 EC Q60 (2 marks, Numerical answer) – For the two port network shown below, the value of the Y 21 parameter (in Siemens) is .
11. GATE 2025 EC Q40 (2 marks, Multiple choice) – The Z-parameter matrix of a two port network relates the port voltages and port currents as follows: bmatrixV 1\ 2bmatrix=ZbmatrixI 1\ 2bmatrix The…
12. GATE 2026 EC Q51 (2 marks, Multiple choice) – Consider the two-port network as shown in the Figure. Which of the following options provides the correct set of values of A, B, C and D parameters?