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

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