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Prof. Ram Meghe Institute of Technology & Research, Badnera Department of Information Technology Class Test –II Sub: Electronics Devices and Circuits Time:-1 Hour Max Marks:-30 -------------------------------------------------------------------------------------------------------------------Solve Any One from Unit No IV & Unit No V 15 marks Unit No IV 1. (a) Define an Op-Amp. With the help of four block functional diagram of Op-Amp, explain the function of each block in brief. (b) Define the following parameter of Op-Amp: i) Supply Voltage Rejection Ratio ii) Common Mode Rejection Ratio iii) Input offset voltage iv) Slew Rate 2. (a) Explain and Derive the exact equation for Output Voltage of Closed Loop Non-Inverting Amplifier. (b) List out the electrical characteristics of an ideal Op-Amp. 3. (a) what is the necessity of constant current source? What are the different means to realize constant current sources? Explain with neat circuit diagram. (b) Explain and Derive the exact equation for Output Voltage of Closed Loop Inverting Amplifier. Unit No V 15marks 4. (a) Draw Basic Integrator Circuit using Op-Amp and derive the expression for output Voltage. Also explain the need of modification in the basic Integrator Circuit. (b) Draw and explain the RC phase shift oscillator. What should be the value of voltage Gain to obtain the frequency of oscillations? 5. (a) Draw and explain the Wein Bridge oscillator. What should be the value of voltage gain to obtain the frequency of oscillations? (b) Derive the expression for the total time period ‘T’ obtained at output of an Monostable Multivibrator using Op-Amp. 6. (a) Explain and Derive the expression for Vo obtained at output of an Integrator using Op-Amp. (b) Explain and derive the expression for VO obtained at output of an Differentiator using Op-Amp.