For the shown ideal-op-amp circuit, which properties are true? The inverting terminal is grounded and the output is fed directly to the non-inverting terminal.
Correct answer: (B) It is bistable; (D) Its output voltage is at saturation
Explanation
Feedback goes to the non-inverting input and is positive. A small positive output reinforces itself toward positive saturation, and a small negative output toward negative saturation. There are two stable saturated states, so B and D. A voltage follower needs negative feedback; there is no timing network to produce astable oscillation.
More Operational Amplifiers questions
GATE 2022 BM Q41– The op-amp/resistor/capacitor filter shown uses ideal op-amps with infinite gain and…
GATE 2022 BM Q57– The shown ideal op-amp has infinite gain and bandwidth and ±10 V supplies. Inputs 0.1 V…
GATE 2021 BM Q43– All op-amps in the shown circuit are ideal with infinite gain and bandwidth. Find…
GATE 2021 BM Q61– The shown op-amp has ±10 V supplies. Its non-inverting node connects to ground through 2R…
GATE 2020 BM Q38– For Vᵢₙ=10sin(2πt) applied to the circuit shown, which output waveform results? Both…
GATE 2026 BM Q48– For the ideal op-amp circuit shown, find input impedance looking into Vin.
