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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define input resistance in terms of feedback systems.
π‘ Hint: Refer to the discussion on voltage amplification.
Question 2
Easy
What is a desensitization factor?
π‘ Hint: Think about how the formula relates to feedback.
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 effect of negative feedback on amplifier gain?
- Increases gain
- Decreases gain
- No effect
π‘ Hint: Think about how feedback influences stabilization.
Question 2
True or False: The desensitization factor is always greater than one.
- True
- False
π‘ Hint: Consider the formula where desensitization is applied.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider an amplifier with R_in = 500Ξ©, A = 20, and Ξ² = 0.05. Calculate the input resistance with feedback and discuss the impact of a load resistance of 200Ξ©.
π‘ Hint: Break down the problem step by step, focusing on the effect of load.
Question 2
If a feedback system has Ξ² = 0.02 and A = 50, and you find the open-loop input resistance to be 1000Ξ©, what will the new input resistance be? Discuss the significance of this change.
π‘ Hint: Use the feedback formula to analyze the change in performance.
Challenge and get performance evaluation