Practice Feedback System (part-c) (92.1) - Feedback system (Part-C) - Analog Electronic Circuits - Vol 4

Practice: Feedback System (Part-C)

Lesson 92.1Feedback system (Part-C)

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9 questions

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6 sample questions

Question 1.
What is the effect of negative feedback on input resistance?
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Think about how feedback stabilizes a circuit.
Question 2.
What does the symbol 'β' represent in feedback equations?
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Consider it as how much of the output is fed back.
3Question 3.
What is the formula for input resistance in a feedback system?
- Rin = Rin(1 + βA)
- Rin = Rin(β + A)
- Rin = Rin - (βA)
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Look for the equation related to feedback gain.
4Question 4.
True or False: Negative feedback always decreases input resistance.
- True
- False
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Consider the definitions of feedback in circuits.
Question 5.
Given a feedback system with an input resistance of 500 ohms, feedback factor β of 0.2, and an amplifier gain A of 5, calculate the new input resistance. Discuss the significance of results.
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Remember to refer back to the formula for correct operation.
Question 6.
Explain how an increase in load resistance affects the performance of a current amplifier using feedback, specifically discussing potential trade-offs.
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Consider practical scenarios in circuit applications.

5 more questions in this section. Enroll free to practise them all.