Practice Conclusion on Stability - 28.2.10 | 28. Common Emitter Amplifier (contd.) - Numerical examples (Part A) | Analog Electronic Circuits - Vol 1
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Knowledge

28.2.10 - Conclusion on Stability

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the primary disadvantage of fixed bias in transistors?

💡 Hint: Consider how changes in transistor characteristics can affect current.

Question 2

Easy

Describe what is meant by the term saturation in a common emitter amplifier.

💡 Hint: Think about how the output voltage behaves under high current conditions.

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 the operating point in a fixed bias circuit when beta increases?

  • It remains stable
  • It may saturate
  • It decreases

💡 Hint: Think about the consequences of increased current demand.

Question 2

True or False: Cell bias is more reliable than fixed bias under varying temperature conditions.

  • True
  • False

💡 Hint: Consider which bias method adjusts dynamically to changes.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If you have a common emitter fixed bias amplifier with a supply voltage of 12V and a beta of 150, calculate the maximum collector current if the transistor saturates. Explain your reasoning.

💡 Hint: Consider the drop across your load when current saturates.

Question 2

Design a cell-biased amplifier aimed to maintain 4mA collector current despite changes in beta between 100 and 300. Discuss the selection of resistances needed.

💡 Hint: Use the feedback principle to ensure stable operation across beta changes.

Challenge and get performance evaluation