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extremely high input impedance, extremely low output impedance and unity transmission gain and is , therefore, an ideal circuit device for use as a buffer amplifier. Question 11. If feedback resistor is made zero or R1 is made ∞(by keeping it open-circuited) in a noninverting amplifier circuit, voltage follower is obtained. V 0 is the output voltage; V 1 and V 2 are the input voltages; A d is the gain of the amplifier (i.e. What is the main difference between general amplifier and power amplifier? Ans The gain bandwidth of an op-amp is the “bandwidth when the voltage gain is unity”. For The Cmrr To Be Infinite What Will Be The Condition? Question 20. What is the output Differentiator and Integrator? When the input signal is quite weak and produces less small fluctuations in the output current in comparison to its quiescent value, the amplifier is called the small signal or voltage amplifier. Explain Why? The CC circuit amplifier is called an emitter follower because in this circuit the output voltage at the emitter terminal follows the input signal applied to the base terminal. A differential amplifier is an amplifier circuit that amplifies the difference between two input signals but suppresses any voltage common to the two inputs. General amplifier can amplify voltage or current or both, but output power. Explain What Is Meant By Small Signal Amplifier? In this condition it is known as perfect balance. 2/4/15. An operational amplifier is a direct coupled high-gain electronic amplifier with a differential input to which feedback is given to control its response characteristics at its single-ended output. The device that amplifies the amplitude of the input signal is called the amplifier. Common Mode Rejection Ratio (CMRR) of a differential amplifier is the ratio of the common-mode gain to differential-mode gain. Differential amplifier BJT. Infinite common-mode rejection ratio (CMRR), Infinite power supply rejection ratio (PSRR). Hence using this as front end component out of band noise can be eliminated which is common to both input terminals. Question 6. Question 25. Question 17. CMRRincreases 3. For a common collector amplifier, current gain is as high as for CE amplifier, voltage gain is less than unity, input resistance is the highest and the output resistance is the lowest of all the three (CE, ,CC and CB) configurations. amplified) by the differential amplifier gain A d. Inverting amplifier is a very versatile component and can be used for performing number of mathematical stimulation such as analog inverter, paraphrase amplifier, phase shifter, adder, integrator, and differentiator. A differential amplifier provides high gain for differential input signals and low gain for common mode signals. Question 5. Explain What Do You Mean By Operating Point? Adder, subtractor, differentiator, integrator fall under the category of linear circuits. So open-loop op-amp configurations are not used in linear applications. Operational Amplifiers Questions and Answers Q1. Ltd. Wisdomjobs.com is one of the best job search sites in India. Why Opamp Called Operational Amplifier? Viva Questions 1. Read This, Top 10 commonly asked BPO Interview questions, 5 things you should never talk in any job interview, 2018 Best job interview tips for job seekers, 7 Tips to recruit the right candidates in 2018, 5 Important interview questions techies fumble most. Input offset voltage may be defined as that voltage which is to be applied between the input terminals to balance the amplifier. This is analogous to the virtual-ground concept of a single-ended op-amp. • … Answer : An operational amplifier, abbreviated as op-amp, … Theory_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. power amplifier can increase the output power. 3. Question 21. Analog Devices' Selection Table for Difference Amplifiers lets you add, remove, and configure parameters to display; compare parts and choose the best part for your design. Question 2. Question 7. 5 Top Career Tips to Get Ready for a Virtual Job Fair, Smart tips to succeed in virtual job fairs. The parameters to be considered for dc applications are: The parameters to be considered for ac applications are: Question 8. • Zero gain for the common - mode signal. Explain What Is Transistor Biasing? 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. Want to know about commonly asked Amplifier Job questions along with answers? difference between two emitter currents; sum of two emitter currents; collector current divided by current gain; collector voltage divided by collector resistance; Answer : 2. 15 signs your job interview is going horribly, Time to Expand NBFCs: Rise in Demand for Talent, Nil drift of characteristics with temperature, Characteristics not drifting with temperature. Operational Amplifier as Differential Amplifier . amplifier. What are differential gain and common-mode gain of a differential amplifier? Explain Why Does An Op-amp Have High Cmrr? Part D Is Independent From The Rest Of The Question. 2. The term LVDT stands for the Linear Variable Differential Transformer.It is the most widely used inductive transducer that converts the linear motion into the electrical signal.. It is very accurate inductive transducer as compared to other inductive transducers. Question 23. Electronics and Communications Engineering Interview Questions, Electrical Engineering Interview Questions, Electronic Devices and Circuits Interview Questions, Electrical Power System Interview Questions, Electronics and Communications Engineering Practice Tests, Business administration Interview questions, Cheque Truncation System Interview Questions, Principles Of Service Marketing Management, Business Management For Financial Advisers, Challenge of Resume Preparation for Freshers, Have a Short and Attention Grabbing Resume. Are defined for zero output impedance, zero output impedance, infinite slew rate, input. 5 top career tips to get started 5 differential amplifier viva questions to succeed in job... Perfect balance is the best place to get Ready for a Virtual job Fair Smart... Https: //mechatrofice.com/circuits/op-amp-viva-interview-questions-answers Question: the circuit to suppress any power supply rejection ratio PSRR... 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