MMMUT Electronics and Communication Engineering previous year question paper for ANALOG ELECTRONICS (BEC 204), semester 3, Minor 1 2026. All 8 questions are listed below, each with a written answer on Nexsus.
Paper details
Subject: ANALOG ELECTRONICS (BEC 204)
Branch: Electronics and Communication Engineering
Semester: 3
Exam: Minor 1 2026
Questions: 8
Questions asked in ANALOG ELECTRONICS Minor 1 2026
Q1(a). (i) Explain how BJT can be used as an amplifier? Why the width of the base region of a transistor is kept very small compared to other regions in BJT? (ii) What do you mean by thermal runaway in BJT? Also determine the expression for stability factor of voltage divider bias circuit of CE BJT. [5 marks]
Q1(b). From the given Fig.1 (b) Find: (i) Emitter voltage V_E (ii) Base voltage V_B (iii) Collector voltage V_C. [3 marks]
Q1(c). Draw the hybrid x (voltage controlled current source) of CE amplifier with bypass resistance)-Compare the results with the hybrid p current controlled source [1 marks]
Q2(a). What is Pind-off voltage in JFET Explain the construction and working of P-channel JFET along with its transfer characteristics with suitable diagrams
Q2(b). In a self-bias-channel JFET shown in Fig. 2(b), the operating point is to be set at I_D = 1.5 mA and V_DD = 10 V. The JFET parameters are I_DS = 5 mA and V_DS (off) = -2 V. Find the values of R_S and R_D. Given that V_DD = 20 V. [3 marks]
Q2(c). Explain small signal analysis of common-source n-channel JFET amplifier. [3 marks]
QQ1.. Attempt any Two parts of the following. Q. 1 (a) is compulsory.
QQ2.. Different long Two-phase of the following: Q1 = 1 + f / 400 μg/g