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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the transconductance (g_m) of a JFET if ID = 5mA, VGSQ = 2V, and VP = -1V?
💡 Hint: Make sure to plug in the values step by step.
Question 2
Easy
What does it mean for FETs to have 'high input impedance'?
💡 Hint: Think about how this characteristic influences circuit design.
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 small-signal model in FET analysis?
- To analyze DC signals
- To simplify AC signal analysis
- To fully describe non-linear effects
💡 Hint: Think about what the model is used for in different kinds of analysis.
Question 2
True or False: The output resistance for FETs is represented as infinite in simple models.
- True
- False
💡 Hint: Consider the practical implications of your answer regarding circuit loading.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a JFET with I_D = 10mA, V_GS = -2V, and V_P = -4V, calculate the transconductance g_m and discuss its implications for amplifier performance.
💡 Hint: Start with the given values and recall the formula for g_m.
Question 2
In a circuit with a MOSFET described by the small-signal model, if v_gs increases by 0.1V and g_m is measured at 5mS, what is the change in output current? Discuss how this sensitivity affects amplifier design.
💡 Hint: Substitute the values into the equation after calculating the increase in current.
Challenge and get performance evaluation