State assumptions made for analyzing ideal op-amp. Reply. Viva Questions 1. Answer: An operational amplifier (or an op-amp) is an integrated circuit (IC) that operates as a voltage amplifier. What are the ideal characteristics of an op-amp. ECE 2-2 lab viva questions with answers. List of RF interview questions and answers. CMRR increases 3. experiments multi stage rc coupled, feed back amplifiers, power amplifiers, oscillators Multistage Amplifiers: 1. 4. inverting amplifier. What is the equation for voltage gain? BJT AMPLIFIERS Questions :-1. What are some of it’s applications? Power Electronics Lab Viva Questions and Answers Electrical Lab Edit Question No. 3. Operational amplifiers can be configured to work as a variety of functional circuits such as amplifiers, oscillators, voltage regulators, filters, rectifiers etc. EDC Lab Viva Questions and Answers Electrical Lab Edit Question No. 5. None of these. 2. 1) How many p-n junctions a transistor has? VIVA QUESTIONS CLIPPERS: 1. Labels: Characteristics, physics viva questions, physics viva questions and answers, Transistor, Transistor Characteristics, viva, viva questions. What is tuned amplifier? What is the gain of inverting amplifier? 4. 1. State the ideal characteristics of Op-amp. pg September 13, 2015 at 7:08 PM. 3. What is output offset voltage? A power amplifier is an electronic amplifier designed to increase the magnitude of power of a given input signal. Suppose, the learner has some knowledge on the theory of transistor amplifier like the use of AC equivalent circuits. 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. In this test, the learner will design as well as examine a fundamental NPN CE transistor amplifier. Hence the complete signal present at the input is amplified at the output. Please note that these amplifiers fall under non-linear applications. Operational Amplifiers Questions and Answers Q1. Both the junctions should be forward biased. Defending a doctoral thesis and facing viva questions is a very critical part of every research scholar. What is the main difference between general amplifier and power amplifier? LINEAR IC APPLICATIONS LAB DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING 5 EXPERIMENT.2 … Feedback. If the emitter bias current increased in a differential amplifier then. BJT current controlled current device, Fet voltage controlled current device, in BJT current produced by holes and electrons, but in FET current produced due to any one only, 2.What is meant by a unipolar device? Barun Singh says: at . Positive peak clipper means 7. some viva question and answer about amplifier 1. Diode cut in voltage value for si and Ge diodes? Viva Questions: 1.What is the necessity of cascading? A tuned amplifier amplifies a certain range of frequencies (narrow band of frequencies) in the radio frequency region and rejects all other frequencies. Ans: The common collector junction transistor amplifier is commonly called an emitter follower. Reply. 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. Analog Electronic Circuits Laboratory Viva Questions 6 Theory_Questions: 1. 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 … Question -2: What is FTTH? Refer Answer-1 . TUNED AMPLIFIERS . 2. i) Open loop gain, Aol = ∞ ii) Input impedance, Ri = ∞ iii) Output Impedance, Ro = 0 iv) Zero Offset, Vo = 0 v) Bandwidth, BW = ∞ 2. Negative peak clipper means 8. Next » This set of Electric Circuits Multiple Choice Questions & Answers (MCQs) focuses on “The Inverting and Non-Inverting Amplifier Circuit”. An op-amp has a differential input. This chapter discusses about the Logarithmic amplifier and Anti-Logarithmic amplifier in detail. Which of the above statements are true. It combines the high resistance, large Transconductance (high gain) achieved in common emitter amplifier with the superior high frequency response of common base amplifier. Nice collection of questions on Digital electronics.but this can be more elaborated by adding questions on Multiplexer , adder , subtracter and muffy loop.With an addition of objective question on digital electronics can make this article more effective. 1. What are the applications of clippers? What is virtual ground? What is an amplifier? Question No. 05: What is op-amp? It is the fundamental building block of analog circuit. 6. nice questions, but less questions. Answer -1: LED is used at transmit end and photo diode is used at receive end of fiber optic system. Resources. Answer: [C] 2,3. Question -1: Explain two main components which form fiber optic communication system. Determine the output from the following circuit a) 180 o in phase with input signal b) 180 o out of phase with input signal c) Same as that of input signal d) Output signal cannot be determined View Answer. 01: What is modulation? 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. Why can't we get more current and voltage gains using general amplifier? Why differential amplifier is used as an input stage of IC op-amp? After the submission of your thesis, you will be asked to defend your research work in the “final viva voce “. Voice frequency range is-----. The input junction is reverse biased and output junction is forward biased. What is cut off frequency? These questions are very useful as college viva questions also. 02: What is the op amp? Why input impedance of op-amp is very high. 3. 01: What is meant by SOA? What is lower 3dB and upper 3dB cut off frequency? Most of these circuit configurations require the op-amp output to be connected back to its input. 4. Positive base and negative base clippers means 9. Discussion/Viva Questions: 1. VIVA VOICE QUESTIONS: 1. 5. Viva voce. The following are some of the frequently asked questions for Viva on Operational Amplifier: What is an Op-Amp? VIVA QUESTIONS 1. More than three. Why the output of the clipper is taken in d.c mode? It is virtually formed the differential amplifier of the input part of an operational amplifier. This connection from output to input is called “feedback”. Tell some characteristics of an ideal op-amp. C) 2,3. 26 comments: Unknown February 3, 2014 at 5:39 AM. Write the relationship between slew rate and maximum frequency of input signal that can be applied to produce output without distortion. Ans:In amplifiers cascading will increase the signal strength at recievers. This set of Linear Integrated Circuit Multiple Choice Questions & Answers (MCQs) focuses on “Ideal Operational Amplifier”. Differential Amplifier Circuits _____ 11.0 Introduction Differential amplifier or diff-amp is a multi-transistor amplifier. 2. EXPNO.1 MEASUREMENT OF RESISTANCE USING WHEATSTONE BRIDGE. What are the various terminals of op-amp 741 IC? The differential amplifier eliminates the need for an emitter bye-pass capacitor. LED converts electrical signal to light form and photo diode does the reverse. Define an integrated circuit and classify them. Replies. The following figure shows the circuit diagram for Class A Power amplifier. Reply Delete. Electric Circuits Questions and Answers – The Inverting and Non-Inverting Amplifier Circuit « Prev. General amplifier can amplify voltage or current or both, but output power. Defending your master thesis in front of the domain experts, co-scholars, and students is a quite interesting experience. The device that amplifies the amplitude of the input signal is called the amplifier. 2) What is the condition for the proper transistor action? 1. B) 1,2. Viva Questions: 1. A) 1,2,3. The input junction is forward biased and output junction is reverse biased. This questionnaire will help one pass the interview for various RF positions such as RF test engineer, RF Design Engineer, RF system Engineer, RF lead etc. 1. 2. 7 Responses to Interview & Viva questions and answers on Digital Electronics. What are the various types of tuned amplifiers? 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. 1. Why is a JFET known as a Unipolar Device? The gain of the circuit will increase . 2.What is 3dB bandwidth? The opamp in the Inverting circuit is in _____ a) Linear region b) Saturation c) Cut-off region d) Non-linear region View Answer. The electronic circuits which perform the mathematical operations such as logarithm and anti-logarithm (exponential) with an amplification are called as Logarithmic amplifier and Anti-Logarithmic amplifier respectively.. Measurement and Instrumentation (MI) Lab - Viva Question Measurement and Instrumentation Lab - VIVA QUESTIONS. Q2. How to define the symbol of op-amp? Home/ lab viva questions/ ECA LAB Analog electronic circuits lab viva questions with answers, aec lab viva questions, Electronic circuit analysis lab viva questions with answers, eca lab viva questions with answers. 2. A Class A power amplifier is one in which the output current flows for the entire cycle of the AC input supply. What is an op-amp and what are its types? Electronic Circuits - Tuned Amplifiers - Important Short Questions and Answers: Tuned Amplifiers. What is an operational amplifier? That is, it has two inputs of opposite polarity. What is CMRR. What μA in μA 741 and LM in LM 324 indicates. What is the gain of non-inverting amplifier? 3. What is slew rate and what causes it. The voltage gain of an emitter follower is just a little less than one since the emitter voltage is constrained … Question No. It is designed to achieve wider bandwidth but dc gain approximately equal o that of common emitter amplifier. What is its significance. Explain the operation of Wheatstone bridge. 6. What is the operating voltage range of IC 741? power amplifier can increase the output power. An operational amplifier, abbreviated as op-amp, is basically a multi-stage, very high gain, direct-coupled, negative feedback amplifier that uses voltage shunt feedback to provide a stabilized voltage gain. Cascade amplifier is a Common base amplifier stage in cascade with common emitter stage. What is the range of resistance can be measured using Wheatstone bridge; What do u … 5. Home/Labs/Viva Questions/FET FET 1.What are the comparisons and differences between a BJT and a JFET? Name two advantages of a Wheatstone bridge over an ordinary ohmmeter. Other names of clippers are-----. D) 1 only. The CE amplifier is one of the main configurations of a transistor amplifier. It is used to provide high voltage gain and high common mode rejection ratio. Why CC amplifier is known as emitter follower? Ans: 2. is current amplification factor, a ratio of collector current to that of emitter or base????? Input impedance increases 2. 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