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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the negative sign in voltage gain signify?
π‘ Hint: Think about the signal direction.
Question 2
Easy
What is the purpose of the emitter resistor R_E?
π‘ Hint: Consider stability and variations in Ξ².
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 task of the emitter resistor R_E in a Common Emitter Amplifier?
- Increase gain
- Stabilize operating point
- Reduce output
- Increase input resistance
π‘ Hint: Think about what happens to the circuit without R_E.
Question 2
True or False: The output voltage of a Common Emitter Amplifier is in phase with the input.
- True
- False
π‘ Hint: Consider the behavior of an inverting amplifier.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a Common Emitter Amplifier with R_C = 10kΞ©, g_m = 0.02 S, and R_E = 1kΞ©, calculate the voltage gain. Discuss if the gain would be acceptable if R_E were increased.
π‘ Hint: Use the gain formula and substitute values for full calculations.
Question 2
Analyze the input resistance for a Common Emitter Amplifier with R_BB = 100kΞ©, Ξ² = 50, r = 150Ξ©, and R_E = 200Ξ©. What would happen if R_E were removed?
π‘ Hint: Focus on parallel resistance calculation including the base resistance.
Challenge and get performance evaluation