Practice Effect On Distortion And Noise (5.3.5) - Feedback Amplifiers and Stability
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Effect on Distortion and Noise

Practice - Effect on Distortion and Noise

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What formula is used to calculate distortion with feedback?

💡 Hint: Think about how feedback reduces the distortion.

Question 2 Easy

Define Internal Noise in amplifiers.

💡 Hint: Recall the sources of noise within amplifiers.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main effect of negative feedback on distortion in amplifiers?

It increases distortion
It has no effect
It reduces distortion

💡 Hint: Think about how feedback modifies the behavior of an amplifier.

Question 2

True or False: Negative feedback can reduce noise that is already present at the input of an amplifier.

True
False

💡 Hint: Reflect on what aspects of noise feedback actually affects.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

An audio amplifier has a total harmonic distortion (THD) of 3% without feedback. If it uses a negative feedback factor of 0.02, calculate the expected distortion with feedback.

💡 Hint: Implement the formula correctly to get your answer.

Challenge 2 Hard

A noise level of 1 mV internal noise is present in an amplifier. If the open-loop gain is 5000 and feedback factor is 0.01, what is the output noise after feedback?

💡 Hint: Pay attention to how to incorporate the parameters.

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Reference links

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