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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.