Which of the following indicates that a silicon NPN junction transistor is biased on?
The correct answer is D: Base-to-emitter voltage of approximately 0.6 volts to 0.7 volts. Which of the following indicates that a silicon NPN junction transistor is biased on is base-to-emitter voltage of approximately 0.6 volts to 0.7 volts. Silicon transistors turn on at about 0.6-0.7V base-emitter voltage. For amateur radio operators, this is important for transistor knowledge. Understanding this helps when biasing transistors.
Exam Tip
Silicon NPN biased on = base-to-emitter voltage 0.6-0.7V. Think 'S'ilicon 'B'ias 'O'n = '0'.6-'0'.7V. Silicon transistors turn on at about 0.6-0.7V base-emitter voltage. Not resistance, not 6-7V - just 0.6-0.7V.
Memory Aid
"Silicon NPN biased on = base-to-emitter voltage 0.6-0.7V. Think 'S'ilicon = '0'.6-'0'.7V. Silicon transistors turn on at about 0.6-0.7V base-emitter voltage. Important for transistor knowledge."
Real-World Application
A silicon NPN junction transistor biased on: It's indicated by base-to-emitter voltage of approximately 0.6 volts to 0.7 volts. This is the forward voltage drop of a silicon PN junction. This is the indication - 0.6-0.7V base-emitter voltage.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Base-to-emitter resistance 6-7 ohms isn't the indication - base-emitter voltage 0.6-0.7V is. Resistance isn't the indication.
Option B: Incorrect. Base-to-emitter resistance 0.6-0.7 ohms isn't the indication - base-emitter voltage 0.6-0.7V is. Resistance isn't the indication.
Option C: Incorrect. Base-to-emitter voltage 6-7 volts isn't correct - silicon transistors turn on at 0.6-0.7V. 6-7V is wrong.
题目解析
The correct answer is D: Base-to-emitter voltage of approximately 0.6 volts to 0.7 volts. Which of the following indicates that a silicon NPN junction transistor is biased on is base-to-emitter voltage of approximately 0.6 volts to 0.7 volts. Silicon transistors turn on at about 0.6-0.7V base-emitter voltage. For amateur radio operators, this is important for transistor knowledge. Understanding this helps when biasing transistors.
考试技巧
Silicon NPN biased on = base-to-emitter voltage 0.6-0.7V. Think 'S'ilicon 'B'ias 'O'n = '0'.6-'0'.7V. Silicon transistors turn on at about 0.6-0.7V base-emitter voltage. Not resistance, not 6-7V - just 0.6-0.7V.
记忆口诀
Silicon NPN biased on = base-to-emitter voltage 0.6-0.7V. Think 'S'ilicon = '0'.6-'0'.7V. Silicon transistors turn on at about 0.6-0.7V base-emitter voltage. Important for transistor knowledge.
实际应用示例
A silicon NPN junction transistor biased on: It's indicated by base-to-emitter voltage of approximately 0.6 volts to 0.7 volts. This is the forward voltage drop of a silicon PN junction. This is the indication - 0.6-0.7V base-emitter voltage.
错误选项分析
Option A: Incorrect. Base-to-emitter resistance 6-7 ohms isn't the indication - base-emitter voltage 0.6-0.7V is. Resistance isn't the indication. Option B: Incorrect. Base-to-emitter resistance 0.6-0.7 ohms isn't the indication - base-emitter voltage 0.6-0.7V is. Resistance isn't the indication. Option C: Incorrect. Base-to-emitter voltage 6-7 volts isn't correct - silicon transistors turn on at 0.6-0.7V. 6-7V is wrong.
知识点
Silicon NPN junction transistor, Biased on, Base-to-emitter voltage, 0.6 volts to 0.7 volts
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.