Engineering BE Electronics and Telecommunication Sem 4 May 2019 2019 Analog Electronics II Question Paper - Mumbai University | munotes

Questions asked in this paper

• (3) Figures to the right indicate full marks
• (4) Assume suitable data if necessary and mention the same in answer sheet

1. Q1 Attempt any 5 questions 20 marks
   • a) List the characteristics of an ideal compare it with practical ones
   • b) Compare power BJTs and power MOSFETS
   • c) What iscrossover distortion in power it is overcome?
   • d) Which type of biasing techniqueis used tobias Integrated Circuit and why?
   • e) Draw the high frequency hybrid —pi equivalent circuit of a BJT and define the various components in the model
   • f) Explain line regulation and load regulation of voltage regulator. Draw load and line regulation characteristics of ideal and practical voltage regulator Determine the corner frequency and maximum gain of a bipolar [10] common emitter circuit with an input coupling capacitor
   • b) Determine the unity-gain bandwidth of N-channel MOSFET with parameters 10 kI load is connected to the output between drain and source determine the Miller capacitance and cut off frequency 10
2. Q3 a) For the circuit shown in fig 3 (a),transistor parameters are 0.7V ,Cgs = 2Pf ,Cgd =.2pF and =0 .Find the miller capacitance , mid band voltage gain and upper cut off frequency
   • b) Draw the circuit diagram of MOSFET based differential amplifier and derive the expressions for differential voltage gain ,common mode gain and 10
3. Q4 Draw the circuit diagram and small signal equivalent circuit for a pair configuration . Derive the expression for its input resistance and overall 10 marks
   • b) Determine I, and Io for the two transistor current source. The circuit parameters 4 are =10V, V=OV, R; = 15 kQ and transistor parameters are = 0.7V, 10
4. Q5 Draw the circuit diagram for transformer coupled class A power amplifier. Also draw ac and dc load lines for the same. Derive expression for power 10 marks
   • b) Draw the circuit diagram summing amplifier and determine the expression of output voltage Vo, in terms of the input voltages and v3, and the resistances used in the circuit. If it is desired to have Vo= find suitable values of these resistances 10
5. Q6 Short notes on: (Attempt any four) 20 marks
   • a) Power MOSFET
   • c) High pass and Low pass filter using OPAMP

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