Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skillsβperfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define trans-impedance.
π‘ Hint: Think about how amplifiers convert current to voltage.
Question 2
Easy
What does negative feedback do in amplifier circuits?
π‘ Hint: Consider its effect on the output relative to the input 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 happens to trans-impedance when negative feedback is applied?
- Increases
- Decreases
- Remains constant
π‘ Hint: Think about how feedback stabilizes signals.
Question 2
True or False: Negative feedback always increases amplifier gain.
- True
- False
π‘ Hint: Remember feedback's role in amplifier behavior.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a common emitter amplifier with R = 10 kΞ© and feedback Ξ² = 50, calculate the new Z' considering typical feedback effects.
π‘ Hint: Focus on the interaction between feedback and resistance values.
Question 2
If an amplifier initially has an input resistance of 20 kΞ© and feedback configuration reduces this by a factor of (1 + Ξ²Z'), what is the new input resistance if Ξ² = 50?
π‘ Hint: Work through the feedback formulas carefully.
Challenge and get performance evaluation