GATE Analog and Digital Electronics: ADC and DAC – Previous Year Questions

3 GATE previous year questions on ADC and DAC (Analog and Digital Electronics, Biomedical Engineering) with answers and explanations, from every paper.

1. GATE 2021 BM Q17 (1 mark, Multiple choice) – The input Vᵢₙ=sin(2π×10⁶t) is quantized by a 10-bit Nyquist ADC. Four least significant bits are discarded, and the remaining six most significant…
2. GATE 2023 BM Q18 (1 mark, Multiple choice) – An 8-bit successive-approximation ADC uses a 1 MHz clock. Starting and ending each conversion take one clock cycle each, in addition to the comparison…
3. GATE 2025 BM Q51 (2 marks, Numerical answer) – An 8-bit DAC maps 00000000 to 0 V and 11111111 to 5 V. Find output for 10110111, rounded to two decimal places in volts.