एक ट्रांजिस्टर की उत्सर्जक धारा 1 mA है। यदि आधार पुनर्संयोजन में उत्सर्जित धारा वाहकों का 1% खो जाता है तो β का मान क्या होगा? दिए गए विकल्पों में से पहचानिए।

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ALP CBT 2 Electronic Mechanic Previous Paper: Held on 21 Jan 2019 Shift 1
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  1. 1
  2. 199
  3. 99
  4. 0.1

Answer (Detailed Solution Below)

Option 3 : 99
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अवधारणा :

एक ट्रांजिस्टर के लिए आधार धारा, उत्सर्जक धारा और संग्राहक धारा संबंधित हैं:

IE = IB + IC

जहाँ IC = βdc IB

βdc = ट्रांजिस्टर का धारा लाभ जिसे इस प्रकार परिभाषित किया गया है:

\(β=\frac{I_C}{I_B}\)

β संग्राहक में गुजरने वाले उत्सर्जक धारा का अंश है।

गणना :

माना कि उत्सर्जक धारा IE है।

चूंकि आधार पुनर्संयोजन में उत्सर्जित धारा वाहकों का 1% खो जाता है, संग्राहक धारा उत्सर्जक धारा का 99% होगी यानी

IC = 0.99 IE

और आधार धारा 1% यानी 0.01 IE होगी

∴ β निम्न होगा:

\(β=\frac{I_C}{I_B}=\frac{0.99I_E}{0.01I_E}\)

β = 99

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