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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define transconductance and explain how it is calculated.
💡 Hint: Think about the characteristics curve of the BJT.
Question 2
Easy
What does $r_{π}$ represent?
💡 Hint: Use the formula $V_T / I_B$ for calculation.
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 does transconductance ($g_m$) measure?
- The change in collector current with respect to $V_{BE}$
- Base-emitter resistance
- Output conductance
💡 Hint: Think about the relationship between input voltage and output current.
Question 2
True or False: The Q-point is irrelevant when analyzing small signal models.
- True
- False
💡 Hint: Recall the definition of Q-point.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A BJT operates with an $I_C = 5 mA$, and at a given Q-point, you need to determine $g_m$ if $V_T = 25mV$. Construct the small signal model and analyze.
💡 Hint: Recall the relationship of $g_m$ in terms of $I_C$ and $V_T$.
Question 2
Given BJT characteristics, define the implications of varying $g_o$ in terms of its impact on output current with changes in $V_{CE}$.
💡 Hint: Explore the passive effects of Early voltage on collector current behavior.
Challenge and get performance evaluation