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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the effect of negative feedback on an amplifier?
π‘ Hint: Think about how feedback interacts with amplifier outputs.
Question 2
Easy
Define input resistance.
π‘ Hint: Consider it as the opposition to the incoming signal.
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 system gain?
- Increases gain
- Decreases gain
- No effect
π‘ Hint: Consider what feedback does within the circuit.
Question 2
True or False: The input resistance of an ideal feedback system is zero.
- True
- False
π‘ Hint: Think about what happens to signals entering the system.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A voltage amplifier has a gain of 10 with a feedback factor of 0.1. Calculate the new input resistance if the original input resistance is 1kΞ©.
π‘ Hint: Use the basic formula for feedback input resistance.
Question 2
Explain how adding a load resistance of 500Ξ© affects the output resistance of a feedback amplifier with an original output resistance of 200Ξ©.
π‘ Hint: Think about how resistances combine in parallel and the principle of superposition.
Challenge and get performance evaluation