GATE Electrical Circuits: AC Circuits and Resonance – Previous Year Questions
11 GATE previous year questions on AC Circuits and Resonance (Electrical Circuits, Biomedical Engineering) with answers and explanations, from every paper.
- GATE 2020 BM Q40 – Two parallel loads draw 10 kW at unity power factor and 10 kVA at 0.6 lagging power factor. What nearest capacitor-bank rating in kVAr gives overall…
- GATE 2021 BM Q14 – An ideal 1/3 H inductor is connected to a 50 Hz sinusoidal voltage source. The energy stored is stated as 6 J. Find the maximum power delivered to the…
- GATE 2022 BM Q33 – A series circuit with R=10 Ω, L=50 mH and C=100 μF consumes power P from a 200 V,50 Hz supply. Change only L so that power remains P but power factor…
- GATE 2022 BM Q54 – A series RLC circuit uses a 220 V,50 Hz supply. R and C are fixed and L is varied to maximize current. At the maximum, current is 0.4 A and capacitor…
- GATE 2023 BM Q32 – In the shown series RC circuit, the resistor- and capacitor-voltage amplitudes are equal. With R=1 kΩ, C=100 μF and source 100cos(ω₀t) V, find ω₀ in…
- GATE 2023 BM Q42 – For the shown series RLC circuit, R=10 kΩ, L=10 mH and C=1 μF. The resistor-voltage amplitude equals the source-voltage amplitude. Find ω₀ in rad/s.…
- GATE 2024 BM Q56 – The shown parallel circuit has L=1 H,C=1 F,R=2 Ω and current source I=sin(t) A. It is in sinusoidal steady state. Find v at t=π/2 s, in volts to two…
- GATE 2024 BM Q61 – A voltage v(t)=v0+2cos(ω0t)+5cos(3ω0t)+cos(5ω0t) drives the shown series capacitor and 1 Ω resistor. The capacitor is a short for every AC component…
- GATE 2025 BM Q37 – Voltage V s=5(100t+/2) V drives current I=10(100t+/6) mA. Find average dissipated power in mW.
- GATE 2025 BM Q40 – Vin=10cos(1000t) V drives the shown 3 kΩ resistor in series with a parallel 1 kΩ–1 μF branch. Find input-impedance magnitude in kΩ to one decimal…
- GATE 2025 BM Q55 – A series RLC circuit has Vrms=240 V,R=60 Ω,L=10 mH,C=8 μF. Find RMS current at resonance, nearest integer amperes.