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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define α in the context of BJTs.
💡 Hint: Think about how you relate collector and emitter currents.
Question 2
Easy
What are the three primary currents in a BJT?
💡 Hint: Remember their definitions as currents entering or leaving certain terminals.
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 α in BJTs denote?
- Emitter Current
- Base Current
- Collector Current to Emitter Current Ratio
💡 Hint: Think about the importance of efficiency in electrical devices.
Question 2
True or False: A value of α above 1 indicates a loss in efficiency.
- True
- False
💡 Hint: Consider the maximum value for ratios.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A BJT has an emitter current of 50 mA and a collector current of 45 mA. Calculate α. If the α value of the BJT must remain between 0.95 and 0.99 for optimal operation, is this BJT suitable?
💡 Hint: Remember to calculate the ratio and analyze its relevance to operational requirements.
Question 2
Discuss how increasing the emitter area of a BJT affects α if the collector area remains constant. Analyze both advantages and disadvantages.
💡 Hint: Consider how area affects charge carriers in the context of current flow.
Challenge and get performance evaluation