What is CMRR. Why is a JFET known as a Unipolar Device? Positive peak clipper means 7. The following are some of the frequently asked questions for Viva on Operational Amplifier: What is an Op-Amp? 5. Feedback. is current amplification factor, a ratio of collector current to that of emitter or base????? Measurement and Instrumentation (MI) Lab - Viva Question Measurement and Instrumentation Lab - VIVA QUESTIONS. These top 10 RF interview questions and answers help engineers seeking RF job to crack the interview with ease.These questions are very useful as viva questions also. Replies. The power of the input signal is increased to a level high enough to drive loads of output devices like speakers, headphones, RF transmitters etc. What are the ideal characteristics of an op-amp. Input impedance increases 2. Write the relationship between slew rate and maximum frequency of input signal that can be applied to produce output without distortion. Positive base and negative base clippers means 9. 4. What is the main difference between general amplifier and power amplifier? 05: What is op-amp? Answer: An operational amplifier, often called an op-amp, is a DC-coupled high-gain electronic voltage amplifier with differential inputs [1] and, usually, a single output. What is the equation for voltage gain? EDC Lab Viva Questions and Answers Electrical Lab Edit Question No. It is the fundamental building block of analog circuit. 6. Why differential amplifier is used as an input stage of IC op-amp? Ans:Generally the gain is considered at peak values of voltage/current at , which value is 0.707, if we convert this into dB which is equal to -3dB. 2. LINEAR IC APPLICATIONS LAB DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING 5 EXPERIMENT.2 … Cascade amplifier is a Common base amplifier stage in cascade with common emitter stage. BJT AMPLIFIERS Questions :-1. 1. What is slew rate and what causes it. Refer Answer-1 . It is designed to achieve wider bandwidth but dc gain approximately equal o that of common emitter amplifier. What μA in μA 741 and LM in LM 324 indicates. pg September 13, 2015 at 7:08 PM. An op-amp has a differential input. Analog Electronic Circuits Laboratory Viva Questions 6 Theory_Questions: 1. 3. A Class A power amplifier is one in which the output current flows for the entire cycle of the AC input supply. 2) What is the condition for the proper transistor action? The input junction is reverse biased and output junction is forward biased. experiments multi stage rc coupled, feed back amplifiers, power amplifiers, oscillators Multistage Amplifiers: 1. 5. Viva Questions: 1. What is an operational amplifier? This connection from output to input is called “feedback”. 7 Responses to Interview & Viva questions and answers on Digital Electronics. VIVA QUESTIONS 1. 1. CMRR increases 3. Operational amplifiers can be configured to work as a variety of functional circuits such as amplifiers, oscillators, voltage regulators, filters, rectifiers etc. Please note that these amplifiers fall under non-linear applications. More than three. Defending your master thesis in front of the domain experts, co-scholars, and students is a quite interesting experience. What is an amplifier? Viva Questions: 1.What is the necessity of cascading? It is virtually formed the differential amplifier of the input part of an operational amplifier. Electronic Circuits - Tuned Amplifiers - Important Short Questions and Answers: Tuned Amplifiers. What is virtual ground? 2. 1. What is its significance. 2. Most of these circuit configurations require the op-amp output to be connected back to its input. A power amplifier is an electronic amplifier designed to increase the magnitude of power of a given input signal. The following figure shows the circuit diagram for Class A Power amplifier. VIVA QUESTIONS CLIPPERS: 1. i) Open loop gain, Aol = ∞ ii) Input impedance, Ri = ∞ iii) Output Impedance, Ro = 0 iv) Zero Offset, Vo = 0 v) Bandwidth, BW = ∞ 2. VIVA VOICE QUESTIONS: 1. 1. 01: What is modulation? A) 1,2,3. Operational Amplifiers Questions and Answers Q1. This chapter discusses about the Logarithmic amplifier and Anti-Logarithmic amplifier in detail. Tell some characteristics of an ideal op-amp. The device that amplifies the amplitude of the input signal is called the amplifier. What are the various terminals of op-amp 741 IC? Question -2: What is FTTH? Suppose, the learner has some knowledge on the theory of transistor amplifier like the use of AC equivalent circuits. Question -1: Explain two main components which form fiber optic communication system. Question No. Resources. Question No. How to define the symbol of op-amp? What is lower 3dB and upper 3dB cut off frequency? Reply Delete. Name two advantages of a Wheatstone bridge over an ordinary ohmmeter. 02: What is the op amp? What is tuned amplifier? These questions are very useful as college viva questions also. What is the gain of inverting amplifier? 3. Q2. 1. Reply. That is, it has two inputs of opposite polarity. 2. Ans: 2. Discussion/Viva Questions: 1. What is output offset voltage? April 13th, 2018 - BMS Institute of Technology and Management Design test and evaluate BJT amplifiers in CE configuration Viva questions 46' 'Bjt Experiment Viva Questions kerkin de May 8th, 2018 - Read and Download Bjt Experiment Viva Questions Free Ebooks in PDF format BC SCIENCE 9 ANSWER KEY BODY SYSTEM WORD SEARCH ANSWERS BROADWAY ENGLISH' 5 / 6 'experiment 6 transistors as amplifiers … “ Ideal operational amplifier ” useful as college viva questions: 1.What the! Is reverse biased focuses on “ Ideal operational amplifier if the emitter bias current increased in a differential amplifier a. 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