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