GATE Power Electronics: DC to DC conversion: Buck, Boost and Buck-Boost Converters – Previous Year Questions
19 GATE previous year questions on DC to DC conversion: Buck, Boost and Buck-Boost Converters (Power Electronics, Electrical Engineering) with answers and explanations, from every paper.
- GATE 2017 EE Q48 – The input voltage V DC of the buck-boost converter shown below varies from 32 V to 72 V. Assume that all components are ideal, inductor current is…
- GATE 2015 EE Q18 – In the following chopper, the duty ratio of switch S is 0.4. If the inductor and capacitor are sufficiently large to ensure continuous inductor…
- GATE 2015 EE Q41 – The circuit shown is meant to supply a resistive load R L from two separate DC voltage sources. The switches S1 and S2 are controlled so that only one…
- GATE 2015 EE Q42 – A self commutating switch SW, operated at duty cycle is used to control the load voltage as shown in the figure. [Figure: A boost converter with…
- GATE 2016 EE Q32 – A buck converter, as shown in Figure (a) below, is working in steady state. The output voltage and the inductor current can be assumed to be ripple…
- GATE 2018 EE Q60 – The figure shows two buck converters connected in parallel. The common input dc voltage for the converters has a value of 100 V. The converters have…
- GATE 2018 EE Q63 – A dc to dc converter shown in the figure is charging a battery bank, B2 whose voltage is constant at 150 V. B1 is another battery bank whose voltage…
- GATE 2019 EE Q47 – A DC-DC buck converter operates in continuous conduction mode. It has 48 V input voltage, and it feeds a resistive load of 24\ . The switching…
- GATE 2019 EE Q63 – In a DC-DC boost converter, the duty ratio is controlled to regulate the output voltage at 48 V. The input DC voltage is 24 V. The output power is 120…
- GATE 2020 EE Q60 – In the dc-dc converter circuit shown, switch Q is switched at a frequency of 10 kHz with a duty ratio of 0.6. All components of the circuit are ideal…
- GATE 2021 EE Q63 – Consider the boost converter shown. Switch Q is operating at 25 kHz with a duty cycle of 0.6. Assume the diode and switch to be ideal. Under…
- GATE 2021 EE Q64 – Consider the buck-boost converter shown. Switch Q is operating at 25 kHz and 0.75 duty-cycle. Assume diode and switch to be ideal. Under steady-state…
- GATE 2022 EE Q61 – The steady state current flowing through the inductor of a DC-DC buck boost converter is given in the figure below. If the peak-to-peak ripple in the…
- GATE 2023 EE Q23 – The chopper circuit shown in figure (i) feeds power to a 5 A DC constant current source. The switching frequency of the chopper is 100 kHz. All the…
- GATE 2024 EE Q35 – A forced commutated thyristorized step-down chopper is shown in the figure. Neglect the ON-state drop across the power devices. Assume that the…
- GATE 2024 EE Q64 – In the DC-DC converter shown in the figure, the current through the inductor is continuous. The switching frequency is 500 Hz. The voltage (V o)…
- GATE 2025 EE Q34 – In the circuit with ideal devices, the power MOSFET is operated with a duty cycle of 0.4 in a switching cycle with I=10 A and V=15 V. The power…
- GATE 2025 EE Q60 – The steady state capacitor current of a conventional DC-DC buck converter, working in CCM, is shown in one switching cycle. If the input voltage is 30…
- GATE 2026 EE Q48 – Consider the boost converter circuit shown. Assume that the semiconductor devices are ideal. In steady state, the inductor current rises linearly from…