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Practice Questions
Test your understanding with targeted questions related to the topic.
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.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
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.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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.
Challenge and get performance evaluation