viva question on amplifier

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

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