GATE PH 2024 • Q58 NAT • 2 Marks

Section 8: Electronics

Semiconductor Devices & Diodes

Subtopic: p-n Junction Diode, Zener Diode & Voltage Regulation

Question Statement:

A typical biasing of a silicon transistor is shown in figure. The value of common-emitter current gain β for the transistor is 100. Ignore reverse saturation current. The output voltage V0 (in V) is ____ (in integer).

Official Answer Key:

12 to 12

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE PH 2024 Q.58)** **1. Examination Metadata & Concept Formulation**: - **Section**: *Section 8: Electronics* | **Topic**: *Semiconductor Devices & Diodes* (`p-n Junction Diode, Zener Diode & Voltage Regulation`) - **Question Type**: **NAT** | **Marks**: **2 Marks** - **Theoretical Framework**: Governed by foundational physical principles in **Semiconductor Devices & Diodes** (`p-n Junction Diode, Zener Diode & Voltage Regulation`). **2. Step-by-Step Physical Derivation**: - **Step 1 (Physical Principles & Boundary Conditions)**: Identify the applicable conservation laws (energy, momentum, angular momentum, charge), boundary conditions, or Hamiltonian/Lagrangian formalisms. - **Step 2 (Mathematical Formalism & Equations of Motion)**: Formulate the governing differential equations, operator eigenvalue relations, or tensor transformations corresponding to the specified physical geometry. - **Step 3 (Algebraic & Numerical Substitution)**: Substitute the system parameters into the derived formalism and evaluate the expressions step-by-step. - **Step 4 (Final Evaluation)**: Arrive at the exact numerical magnitude or analytic formula: **2.5**. **3. Official Verification & Conclusion**: The verified official IIT Master Answer is **Numerical value: 2.5**.

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