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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens to input resistance in a feedback system?
π‘ Hint: Consider the formula for input resistance in relation to feedback.
Question 2
Easy
Define a transconductance amplifier.
π‘ Hint: Look for the relationship between voltage and current in 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 desensitization factor?
- Factor increasing internal gain
- Factor increasing input resistance
- Factor affecting output power
π‘ Hint: Think about its impact on input characteristics.
Question 2
True or False? The feedback configuration can decrease input resistance.
- True
- False
π‘ Hint: Reflect on how feedback influences amplifier performance.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An amplifier has an initial input resistance of 150 ohms and a feedback factor Ξ² of 0.15 with a gain of 40. Calculate how feedback changes the input resistance.
π‘ Hint: Apply the feedback formula correctly and remember unit conversions.
Question 2
Describe what happens to output resistance in practical scenarios with non-ideal feedback conditions.
π‘ Hint: Remember the characteristics of output resistances and how they affect the power transfer.
Challenge and get performance evaluation