Introduction of Transformer makes the amplifier bulkier and costly. GO TO QUESTION. Often amplifier with common emitter multi stages is referred to as Cascade amplifier. OPAMP is called direct coupled because the input of one OPAMP is inserted into the input of another OPAMP. Ans Characteristic of ideal OPAMP are. The degree of exactness (closeness) of a measurement compared to the expected (desired) value. 4. Slew rate of an op-amp is defined as the maximum rate of change of output voltage per unit time and is expresses in V/µs. Define transducer? Question 32. What Is Perfect Balance In Op Amp? 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 … Save my name, email, and website in this browser for the next time I comment. Question 29. The dynamic resistance of the emitter-base junction diode is called the ac emitter resistance. If the feedback resistor in Q15 (above question) is open, the voltage gain ……. This circuit finds wide applications as a buffer amplifier between a high impedance source and a low load. If feedback from output to input is given in such in a way that the introduction of feedback in the amplifier increases the overall gain, then the feedback is termed as positive feedback. 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. ... Bridges in Electronic Instrumentation can be classified as DC bridges and AC bridges. 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. Explain What Are The Applications Of An Inverting Amplifier? instrumentation amplifiers commonly known as INAMPS are differantial amplifiers having high input impedane, low output impedance. Question 12. In a CE configuration, the output voltage increases in the negative direction when the input signal voltage increases in the positive direction and vice-versa. Question 23. Explain What Are The Advantages Of Using A Voltage Follower Amplifier? The formula for non inverting amplifier is given as 1+Rf/R1. Measurements and Instrumentations LAB VIVA Questions :-1. 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. Operational Amplifier's Previous Year Questions with solutions of Analog Electronics from GATE EE subject wise and chapter wise with solutions. The frequency response of the direct coupled amplifier is similar to low pass filter and is characterized by rise time. What Is Instrumentation Instrumentation Engineering? Alternatively in the improvised versions of differential amplifiers a constant current source is kept in emitter lead to provide very high resistance (Theoretically infinite). Question 5. Question 30. What is servo mechanisms? Explain What Is The Effect Of Removal Of Bypass Capacitor In A Ce Amplifier Circuit? Question 13. To meet given amplifier specifications two or more stages are cascaded in series, each stage can be identical or different. 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. An instrumentation amplifier is a closed-loop gain block that has a differential input and an output that The MOSFET differential amplifier provides high input resistance but less gain compared to differential amplifiers implemented using BJT’s. Hi, You can find print option at the bottom of the article. It can be used as single stage or in cascade. 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. increases; decreases; is not affected; depends on R i; Answer : 1 Question 38. Instrumentation amplifier is a kind of differential amplifier with additional input buffer stages. In wireless receivers, weak-signal amplifiers are mainly used. Explain what is a dc power supply? It is called operating point because the variations of IC and VCE take place about this point when signal is applied. b) CC amplifiers are used as voltage buffers for connecting high resistance source to low resistance load. Amplifiers are of two types: power amplifiers or weak-signal amplifiers. IN-AMPS vs. OP AMPS: WHAT ARE THE DIFFERENCES? The band width, in a feedback amplifier. kindly tell ,how to save the document. 15. 3. Question 10. Explain What Do You Mean By Operating Point? 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