Practice Equivalent Circuit Of Common Emitter Configuration (19.1.2) - Linearization of non - linear circuit containing BJT (Contd.)

Practice: Equivalent Circuit of Common Emitter Configuration

Lesson 19.1.2Linearization of non - linear circuit containing BJT (Contd.)

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9 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define transconductance and explain how it is calculated.
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Think about the characteristics curve of the BJT.
Question 2.
What does $r_{π}$ represent?
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Use the formula $V_T / I_B$ for calculation.
3Question 3.
What does transconductance ( $g_m$ ) measure?
- The change in collector current with respect to $V_{BE}$
- Base-emitter resistance
- Output conductance
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Think about the relationship between input voltage and output current.
4Question 4.
True or False: The Q-point is irrelevant when analyzing small signal models.
- True
- False
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Recall the definition of Q-point.
Question 5.
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.
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Recall the relationship of $g_m$ in terms of $I_C$ and $V_T$.
Question 6.
Given BJT characteristics, define the implications of varying $g_o$ in terms of its impact on output current with changes in $V_{CE}$ .
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Explore the passive effects of Early voltage on collector current behavior.

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