Practice Questions
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In a closed-loop configuration of an operational amplifier (Op-Amp), what is the main purpose of adding feedback resistors?
The two resistors decide how much of the output is sent back to the input. Other options are incorrect because Many think feedback raises the input si...
When analyzing the frequency response of an operational amplifier (op-amp), which of the following best describes the impact of non-linear distortion on the output signal at different frequencies?
High‑frequency signals push the op‑amp toward its limits. Other options are incorrect because The misconception is that distortion gets smaller at hig...
What is the primary effect of a high Power Supply Rejection Ratio (PSRR) on the performance of an operational amplifier (op-amp) gain in a circuit?
A high PSRR means the op‑amp ignores changes in the supply voltage. Other options are incorrect because Increasing PSRR does not raise the amplifier’s...
In a practical operational amplifier (op-amp) circuit, how does the input impedance affect the power supply rejection ratio (PSRR) and thermal drift performance of the system?
A higher input impedance means the op‑amp draws little current from the previous stage. Other options are incorrect because The idea that more input i...
In an operational amplifier circuit, which of the following statements accurately describes the relationship between common-mode rejection ratio (CMRR), power supply rejection ratio (PSRR), and non-linear distortion when designing for high precision applications?
A good op‑amp needs both high CMRR and high PSRR. Other options are incorrect because The idea that a strong CMRR can make up for a weak PSRR is a mix...
Arrange the steps for designing a practical op-amp circuit using negative feedback to achieve a desired gain.
The first step is to decide what gain is needed for the application. Other options are incorrect because Picking an op‑amp before knowing the target g...
Which of the following statements about operational amplifiers (op-amps) and their gain are true? (Select all that apply)
Negative feedback pulls the output back so the circuit behaves predictably. Other options are incorrect because People think ideal op-amps always have...
Op-Amp Gain is to Circuit Design as High-Voltage Transmission Lines are to: ?
High gain lets an op-amp produce the needed output with small error signals, making the circuit stable and efficient. Other options are incorrect beca...
In a negative feedback op-amp configuration, what is the primary reason for implementing feedback?
Negative feedback reduces the difference between the desired output and the actual output. Other options are incorrect because Many think feedback boo...
You are designing an op-amp circuit for a signal amplification application. Which of the following configurations would be the most appropriate for achieving a stable output gain while minimizing distortion and maximizing bandwidth?
The non‑inverting amplifier gives a fixed gain that does not depend on the input signal level. Other options are incorrect because The inverting ampli...
How does negative feedback influence the gain of an op-amp in practical circuits?
Negative feedback feeds a small portion of the output back to the input in the opposite direction. Other options are incorrect because Some think feed...
If an operational amplifier circuit consistently produces a lower output voltage than expected based on its specifications, what could be the underlying cause?
When negative feedback is used, the op‑amp compares its output to its input and adjusts to keep the error small. Other options are incorrect because S...
You are designing an audio amplifier circuit using an operational amplifier. You want to ensure that the output signal remains stable and does not distort at high input levels. Given that op-amps have high but finite gain, which design consideration is most critical for maintaining output stability in your circuit?
Negative feedback tells the op‑amp how much to amplify, keeping the gain steady. Other options are incorrect because Choosing the highest‑gain op‑amp ...
In practical op-amp circuits, the behavior of the output voltage is primarily controlled by the feedback applied, leading to a predictable __________ behavior.
When you connect a resistor network to the output of an op-amp, the network tells the amplifier how much to amplify the input difference. Other option...
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