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

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