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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of biasing a BJT?
💡 Hint: Think about what happens if we do not bias the transistor correctly.
Question 2
Easy
What does the term Q-point refer to?
💡 Hint: Consider why we need an operation point in transistors.
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 primary purpose of a voltage divider bias?
- To set the Q-point
- To stabilize the amplifier
- To calculate currents
💡 Hint: Think about the issues arising when no biasing is done.
Question 2
True or False? The emitter resistor RE enhances the stability of the Q-point in BJT circuits.
- True
- False
💡 Hint: Recall what feedback does in electronic circuits.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A BJT with VCC = 15V needs to be biased for a Q-point at IC = 3mA. Design and calculate R1, R2, and RE assuming VBE = 0.7V. Use a βmin = 50.
💡 Hint: Start with VE as a percentage of VCC and calculate backwards.
Question 2
If a transistor’s β increases from 100 to 150, discuss the effect on IC in a fixed bias configuration and analyze the potential shift in Q-point.
💡 Hint: Think about how the collector current is calculated in fixed bias.
Challenge and get performance evaluation