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