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