Question 13. What is the gain of instrumentational amplifier? What is an inverting amplifier? Give Examples Of Linear Circuits? menu ExamSIDE Questions. 4. basically the the circuit consists of 3 opamps, two of them are voltage followers and one differantial amplifier AC Millivoltmeter (2) Audio Systems (11) Basic Electronics (14) Bioelectric Amplifiers (5) Bioinformatics (12) Biomedical Instrumentation (71) Biotelemetry system (5) Bridges (12) ... 8085 Microprocessor Lab Viva Questions With Answers 1. Mention the need and advantage of Instrumentational amplifier? List The Parameters That Should Be Considered For Ac And Dc Applications? Question 26. Its low input resistance finds application in specific areas where the signal strengths are very low (or) when load on source should be very low. What are Advantages and disadvantages of Negative feedback? Op-amp Is Used Mostly As An Integrator Than A Differentiation. The term Coupling occurs in multi stage amplifiers and refers to the way in which the output of one stage is connected to the input of next stage. The parameters to be considered for dc applications are: The parameters to be considered for ac applications are: Question 8. Following are the some of the characteristic parameters of CB amplifier neglecting the output resistance of amplifier (which accounts for early effect) are, Common emitter amplifier is on in which the emitter terminal is common to both input and output circuit. It is called operating point because the variations of IC and VCE take place about this point when signal is applied. Define CMRR. It combines the high resistance, large Transconductance (high gain) achieved in common emitter amplifier with the superior high frequency response of common base amplifier. Explain What Are The Main Purposes For Which A Common-collector Amplifier May Be Used? the gain of inamps are also very high. The gain and feedback factor in an amplifier are often functions of frequency, so the feedback may lead to positive feedback. 70. Question 15. Explain What Is An Operational Amplifier? What is the difference between inverting and non inverting amplifier? Engineering Electronics ECE Electrical EEE FAQs Measurements and Instruments Unit wise Two Marks, Short, Viva, Interviews Questions and Answers PDF Download What is lower/upper cut-off frequency of non-interacting cascading stages? instrumentation amplifiers commonly known as INAMPS are differantial amplifiers having high input impedane, low output impedance. 2. Question 7. The degree of exactness (closeness) of a measurement compared to the expected (desired) value. What is CMMR of differential amplifier using BJT? Explain What Is Meant By Small Signal Amplifier? 2. The closed-loop voltage gain is ……… 100,000; 1000; 101; 100; Answer : 3. Question 37. When an op-amp is operated in the open-loop configuration, the output either goes to positive saturation or negative saturation levels or switches between positive and negative saturation levels and thus clips the output above these levels. What Is Characteristic Of Ideal Op Amp? kindly tell ,how to save the document. In an inverting amplifier, the input is connected to the minus or inverting terminal of op-amp. Assumptions made for analyzing ideal op-amp are: Question 3. Common base amplifier is on in which the base terminal is common to both input and output circuit. What is an op-amp? GO TO QUESTION. 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. 69. Go through our Amplifier job interview questions and answers page to prepare well for the best job in reputed organizations. The CMMR of differential amplifier using BJT with emitter resistance at the common terminal where the emitters of both the BJT’s meet and output taken across the collector terminals is given as. Explain What Is A Differential Amplifier? (a) remains unaffected (b) decreases by the same amount as the gain increase (c) increases by the sane saaaajajt as the gain decrease Explain what is a rectifier? An amplifier is an electronic device which increases the input signal's voltage, current, or power. ... 30. Why slew rate is not infinite in Ideal op-amp? 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. Differential amplifier is a combination of inverting and noninverting amplifiers and amplifies the voltage difference between input lines neither of which is grounded. Answer : Instrumentation engineering is the engineering specialization focused on the principle and operation of measuring instruments which are used in design and configuration of automated systems in … Q15. Input offset voltage may be defined as that voltage which is to be applied between the input terminals to balance the amplifier. Measurements and Instrumentations LAB VIVA Questions :-1. What is the effect of degeneration resistance on CMMR? Desensitivity factor = (dAfb/Afb)/(dA/A) = 1/(1+A*β). Explain What Do You Mean By Operating Point? A capacitive coupling is one in which the output of one stage of amplifier is connected to the input of second stage through a capacitor. Integrators are widely used in ramp or sweep generators, filters, analog computers etc. An instrumentation amplifier is one kind of IC (integrated circuit), mainly used for amplifying a signal.This amplifier comes under the family of the differential amplifier because it increases the disparity among two inputs. Define Offset Voltage As Applied To An Op-amp? An instrumentation amplifier is a closed-loop gain block that has a differential input and an output that Question No. 3. If we give the sinusoidal input in differentiator we will get the output of differentiator as a square output. Because the transistor operation is carried out by two types of charge carriers (maj…, Bipolar Junction Transistors Questions & Answers, Operational Amplifiers Questions & Answers, Electrical & Instrumentation QC Interview Questions, What is Electrical Conduit? Question 31. An instrumentation (or instrumentational) amplifier is a type of differential amplifier that has been outfitted with input buffer amplifiers, which eliminate the need for input impedance matching and thus make the amplifier particularly suitable for use in measurement and test equipment. If feedback resistor is made zero or R1 is made ∞(by keeping it open-circuited) in a noninverting amplifier circuit, voltage follower is obtained. 75. Viva Questions and Answers on Bipolar Junction Transistor Experiment 1. Measurement and Instrumentation Lab - VIVA QUESTIONS. The typical Darlington pair is shown below, Following are some of the characteristic parameters of Darlington pair. 74. ELECTRONICS SYSTEM DESIGN LAB VIVA Questions :-1. 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. If feedback from output to input is given in such in a way that the introduction of feedback in the amplifier decreases the overall gain, then the feedback is termed as negative feedback. Explain What Is Meant By Phase Reversal? A certain noninverting amplifier has R i of 1 kΩ and R f of 100 kΩ. Voltage follower has three unique characteristics viz. Question 17. Instrumentation amplifier using opamp. Zero output impedance. Alternatively in the improvised versions of differential amplifiers a constant current source is kept in emitter lead to provide very high resistance (Theoretically infinite). What are the applications of transistor amplifiers? What are the important CPU registers in the 8085 microprocessor? The zero signal values of IC and VCE are known as the operating point. Question 11. Explain What Is An Adder Or Summing Amplifier? Question 5. In negative feedback amplifiers it is the negative product of loop gain and feedback factor. Question 6. An integrator is a circuit that performs a mathematical operation called integration. Explain Why Common-collector Circuit Is Known As An Emitter Follower? Hence using this as front end component out of band noise can be eliminated which is common to both input terminals. Question 2. The proper flow of zero signal collector current and the maintenance of proper collector emitter voltage during the passage of signal is called the transistor biasing. CMRR is defined as the ratio of differential voltage gain (Ad) to common mode voltage gain (Acm). Additional characteristics include very low DC offset, low drift, low noise, very high open-loop gain, very high common-mode rejection ratio, and very high input impedances. Its low input resistance finds application in specific areas where the signal strengths are very low (or) when load on source should be very low. Mention monolithic instumentaional amplifier? 5. Question 1. use it to save in pdf. High CMRR ensures that the common mode signals such as noise are rejected successfully and the output voltage is proportional only to the differential input voltage. A direct coupling is one in which the output of one stage of amplifier is connected to the input of second stage in such a way to allow even DC signals from one stage to another. Adder, subtractor, differentiator, integrator fall under the category of linear circuits. The formula for non inverting amplifier is given as 1+Rf/R1. 2. It is also known as the quiescent or Q-point. Important Interview questions on OPAMP. Finite, Accurate and Stable Gain: Since the instrumentation amplifiers are required to amplify very low-level signals from the transducer device, high and finite gain is the basic requirement.The gain also needs to be accurate and the closed-loop gain must be stable. Question 27. Explain What Is The Effect Of Removal Of Bypass Capacitor In A Ce Amplifier Circuit? What are the types of coupling used in amplifiers? Explain what is a dc power supply? Easier Gain Adjustment: Apart from a finite and stable gain, variation in the gain factor over a prescribed range of … Explain What Are The Advantages Of Using A Voltage Follower Amplifier? Be defined as the ratio of differential amplifier is to be considered for ac and DC applications are Question... Operational amplifier because of its low output impedance sinusoidal input in integrator will. The important CPU registers in the 8085 microprocessor of raising the strength of a Wheatstone bridge over ordinary. 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