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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is output impedance?
💡 Hint: Think about what 'impedance' means in a circuit context.
Question 2
Easy
Name one small signal parameter.
💡 Hint: It’s related to the current flowing in the transistor.
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 formula for calculating output impedance?
- R_out = R_load + small signal parameters
- Z_out = 1 / (g_m + g_o)
- Z_out = R_load + R_bias
💡 Hint: Think about how output and small signal parameters relate.
Question 2
True or False: Lower output impedance is always better for amplifier performance.
- True
- False
💡 Hint: Consider what happens when the impedance is high.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a common collector amplifier with a collector current of 0.75 mA, calculate the output impedance if the small signal parameters g_m = 40 mS and r_o = 200 kΩ.
💡 Hint: Substitute the values carefully into the formula.
Question 2
Consider a scenario where a load resistance of 1kΩ is connected. If the output impedance calculated is 52Ω, what is the effect of this load on the output voltage?
💡 Hint: Think about voltage division principles and how impedance interacts.
Challenge and get performance evaluation