Practice Current Gain Variation - 19.1.5 | 19. Linearization of non - linear circuit containing BJT (Contd.) | Analog Electronic Circuits - Vol 1
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Knowledge

19.1.5 - Current Gain Variation

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is transconductance?

💡 Hint: Think about the current flow changes in relation to the input voltage.

Question 2

Easy

Define the output conductance.

💡 Hint: Consider how current responds to voltage changes.

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 measure?

  • Ratio of Output Current to Input Voltage
  • Change in Collector Current with change in Base Voltage
  • The slope of output current characteristic

💡 Hint: Look for the relationship between collector current and the input voltage.

Question 2

True or False: Output conductance affects linearity.

  • True
  • False

💡 Hint: Think about how circuit performance is influenced by these parameters.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given the small signal model parameters of a BJT with g_m = 3 mS and r_pi = 2 kΩ, calculate the output voltage gain if the load resistance is 1 kΩ.

💡 Hint: Remember to calculate the parallel resistance first.

Question 2

A BJT amplifier exhibits a transconductance of 5 mS at an operating point of 10V and 20 µA. How does altering the operating point to 15V affect the transconductance if all other factors remain constant?

💡 Hint: Consult the I-V characteristics of the BJT to evaluate changes.

Challenge and get performance evaluation