The GATE Grind

GATE Analog Circuits: Diode Circuits – Previous Year Questions

16 GATE previous year questions on Diode Circuits (Analog Circuits, Electronics and Communication Engineering) with answers and explanations, from every paper.

  1. GATE 2015 EC Q21 (1 mark, Multiple choice) – For the circuit with ideal diodes shown in the figure, the shape of the output (v out) for the given sine wave input (v in) will be
  2. GATE 2015 EC Q22 (1 mark, Numerical answer) – In the circuit shown below, the Zener diode is ideal and the Zener voltage is 6 V. The output voltage V o (in volts) is .
  3. GATE 2015 EC Q23 (1 mark, Multiple choice) – In the circuit shown, the switch SW is thrown from position A to position B at time t = 0. The energy (in J) taken from the 3 V source to charge the…
  4. GATE 2018 EC Q36 (2 marks, Multiple choice) – The circuit shown in the figure is used to provide regulated voltage (5 V) across the 1\ k resistor. Assume that the Zener diode has a constant…
  5. GATE 2019 EC Q34 (1 mark, Numerical answer) – In the circuit shown, V s is a square wave of period T with maximum and minimum values of 8 V and -10 V, respectively. R 1=R 2=50\ . The average value…
  6. GATE 2019 EC Q48 (2 marks, Multiple choice) – In the circuit shown, the breakdown voltage and the maximum current of the Zener diode are 20 V and 60 mA, respectively. The values of R 1 and R L are…
  7. GATE 2019 EC Q62 (2 marks, Numerical answer) – In the circuit shown, V s is a 10 V square wave of period T=4 ms with R=500\ and C=10\ F. The capacitor is initially uncharged at t=0, and the diode…
  8. GATE 2020 EC Q27 (1 mark, Numerical answer) – In the circuit shown below, all the components are ideal and the input voltage is sinusoidal. The magnitude of the steady-state output V o (rounded…
  9. GATE 2021 EC Q53 (2 marks, Numerical answer) – An asymmetrical periodic pulse train v in of 10 V amplitude with on-time T ON=1 ms and off-time T OFF=1\ s is applied to the circuit shown in the…
  10. GATE 2022 EC Q57 (2 marks, Numerical answer) – A circuit and the characteristics of the diode (D) in it are shown. The ratio of the minimum to the maximum small signal voltage gain V out V in is…
  11. GATE 2023 EC Q40 (2 marks, Multiple choice) – In the circuit shown below, D 1 and D 2 are silicon diodes with cut-in voltage of 0.7 V. V IN and V OUT are input and output voltages in volts. The…
  12. GATE 2024 EC Q23 (1 mark, Multiple choice) – In the circuit shown, the n:1 step-down transformer and the diodes are ideal. The diodes have no voltage drop in forward biased condition. If the…
  13. GATE 2024 EC Q35 (1 mark, Numerical answer) – As shown in the circuit, the initial voltage across the capacitor is 10 V, with the switch being open. The switch is then closed at t=0. The total…
  14. GATE 2025 EC Q57 (2 marks, Multiple select) – All the diodes in the circuit given below are ideal. Which of the following plots is/are correct when V I (in Volts) is swept from -M to M?
  15. GATE 2025 EC Q61 (2 marks, Numerical answer) – The diode in the circuit shown below is ideal. The input voltage (in Volts) is given by V I=10100 t, where time t is in seconds. The time duration (in…
  16. GATE 2026 EC Q65 (2 marks, Numerical answer) – Consider the ideal diodes D1 and D2 as shown in the Figure with cut-in voltage V =0 Volt and v i(t) is in Volt. The maximum voltage (Volt) of the…