Instrumentation Amplifier Question & Answers September 15, 2022 By WatElectronics This article lists 50 Instrumentation Amplifier MCQs for engineering students. All the Instrumentation Amplifier Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Instrumentation Amplifier. An instrumentation amplifier is basically a difference amplifier. The instrumentation system consists of two blocks are transducer and a signal conditioner. The transducer is basically a device that is used to convert one form of energy into another form, in many consumer and industrial applications the measurement & control of quantities such as pressure, temperature, and humidity is required. We can’t apply the physical quantity directly to any other system, therefore it is very much important to convert the physical quantity into an equivalent electrical signal, so the conversion process done by the device is called a transducer. The output obtained from the transducer can’t be directly applied to the instrumentation system because the output of the transducer is a very low-level signal, therefore, it is necessary to signal conditioning to process the signal properly so that it can derive the instrumentation system. The signal conditioner performs various functions like amplification, attenuation of the signal, filtering of signal, sampling, integration, differentiation, addition, subtraction, and many more operations. So, when the operations are performed on the signal, the signal gets into the form, so that it can derive the further instrumentation system. 1). What are the characteristics of an instrumentation amplifier? High input resistance Low noise High CMRR All of the above Hint 2). What is the standard form of PGIAS? Programmable Gain Important Amplifier Programmable Gain Instrumentation Amplifier Programmable Gain Instruction Amplifier None of the above Hint 3). Which one of the following amplifier build-ups of bipolar junction transistors? Operational Instrumentation Both a and b None of the above Hint 4). Which one of the following IC had four amplifiers? INA128 LM324 Both a and b None of the above Hint 5). The figure shown below is a circuit diagram of ______________________ instrumentation amplifier? Geophone amplifier AC coupled Current feedback High gain Hint 6). The input bias current of an Analog device AD8221 is _________________ nA max? 2nA 1.2nA 1.5nA 10nA Hint 7). Which one of the following instrumentation amplifiers is a type of monolithic in-amp? AD8225 AD8250 AD8251 None of the above Hint 8). The maximum input offset voltage of Analog device AD627 in-amp is _________________ micro volts? 100 micro volts 200 micro volts 300 micro volts 250 micro volts Hint 9). The input bias current of Analog device AD623 in-amp is _____________________ nA? 1.5 nA 2 nA 25 nA 56 nA Hint 10). The figure shown below is a pin diagram of ______________________ instrumentation amplifier? AD620 LT1102 LTC1100 AD623 Hint 11). Which one of the following instrumentation amplifiers is a type of low power single supply instrumentation amplifier? AD8627 AD8250 AD8251 None of the above Hint 12). The potentiometers are categorized into __________________ types? Five Two Three Six Hint 13). The bandwidth of AD623 instrumentation audio amplifier is ___________________ KHz? 100 KHz 400 KHz 300 KHz 800 KHz Hint 14). Which one of the following is an electrothermic sensing element? Potentiometers Variable separation LVDT displacement sensors Thermocouple Hint 15). What is the standard form of PIA? Programmable Instrumentation Amplifier Precision Instrumentation Amplifier Programmable Instruction Amplifier None of the above Hint 16). The input offset current of AD620S instrumentation amplifier is _________________ nA? 200 nA 50 nA 500 nA None of the above Hint 17). The instrumentation amplifiers are categorized into _________________ types? Five Two Three Six Hint 18). Which one of the following is an example for two op-amp? INA 122 INA 333 Both a and b None of the above Hint 19). Which one of the following is an elastic sensing element? Potentiometers Variable separation LVDT displacement sensors Bourdon tube Hint 20). The figure shown below is a schematic diagram of ______________________ instrumentation amplifier? AD620 LT1102 LTC1100 AD623 Hint 21). Which one of the following amplifier build-ups of three differential amplifiers? Operational Instrumentation Both a and b None of the above Hint 22). Which one of the following IC specifications comes under op-amp? IC741 AD623 Both a and b None of the above Hint 23). Which one of the following IC is a single chip IC? INA128 LM324 Both a and b None of the above Hint 24). What is the standard form of EMG? Electromyography Electrical myography Electro mechanical myography None of the above Hint 25). The gain range of AD623 instrumentation audio amplifier is ___________________ ? 100 to 300 400 to 1000 300 to 400 1 to 1000 Hint 26). Which one of the following is an inductive sensing element? Potentiometers Variable separation LVDT displacement sensors Thermocouple Hint 27). What is the standard form of EKG? Electrocardiogram Elektrocardiogram Both a and b None of the above Hint 28). The input offset current of AD620B instrumentation amplifier is _________________ nA? 200 nA 50 nA 500 nA None of the above Hint 29). The pin -Vs and +Vs in an AD620 amplifier is used to supply _________________ voltage? Positive supply voltage Negative supply voltage Both a and b None of the above Hint 30). How many op-amps are used in the below instrumentation amplifier circuit diagram? One Two Three Four Hint 31). Which one of the following amplifiers used to make a buffer circuit? Operational Instrumentation Both a and b None of the above Hint 32). What is the standard form of SEMG? Surface Electromyography Single Electrical myography Simple Electro mechanical myography None of the above Hint 33). The power supply of an Analog device In-Amp AD8221 is _________________ mA? 100 mA 60 mA 0.9 mA 50 mA Hint 34). Which one of the following is a capacitive sensing element? Potentiometers Variable separation LVDT displacement sensors Thermocouple Hint 35). The input offset current of AD620A instrumentation amplifier is _________________ nA? 200 nA 50 nA 500 nA None of the above Hint 36). The input voltage noise of AD620A instrumentation amplifier is _________________ nV/Hz? 13 nV/Hz 20 nV/Hz 56 nV/Hz 80 nV/Hz Hint 37). Which one of the following power instrumentation amplifiers has gain range of 10,000? AD620A AD620B AD620S All of the above Hint 38). The reference input current of AD620A instrumentation amplifier is ___________________ ? 60 micro amperes 100 micro amperes 120 micro amperes 240 micro amperes Hint 39). The input bias current of an Analog device In-Amp AD8225 is _________________ nA max? 2nA 1.2nA 1.5nA 10nA Hint 40). Which one of the following bridges is used in the below instrumentation amplifier block diagram? Beam bridge Arch bridge Truss bridge Transducer bridge Hint 41). In which one of the following amplifiers the buffer is a part of the circuit? Operational Instrumentation Both a and b None of the above Hint 42). Which one of the following IC specifications comes under instrumentation amplifier? IC741 AD623 Both a and b None of the above Hint 43). What is the standard form of DEO? Differential Electrode Offset Digital Electrode Offset Difference Electrode Offset None of the above Hint 44). The input bias current of an Analog device In-Amp AD620 is _________________ nA max? 2nA 1.2nA 1.5nA 10nA Hint 45). The operating current of AD623 instrumentation audio amplifier is ___________________ uA? 100 uA 400 uA 300 uA 500 uA Hint 46). Which one of the following is a resistive sensing element? Potentiometers Variable separation LVDT displacement sensors Thermocouple Hint 47). The instrumentation amplifier AD620 used in _____________________ applications? Medical ECG Blood pressure monitor Weigh scales All of the above Hint 48). The output short circuit duration is indefinite in ________________ instrumentation amplifier? AD620A AD620B AD620S All of the above Hint 49). The pins +IN and -IN in AD620 instrumentation amplifier are used for applying _________________? Inverting input voltage Non-inverting input voltage Both a and b None of the above Hint 50). Which one of the following is a disadvantage of an instrumentation amplifier? Reliability of the setup and results Highly scalable Long range transmission issues None of the above Hint For More MCQs Differential Amplifier Question & Answers Class D Amplifier Question & Answers Power Amplifier Question & Answers Low Noise Amplifier Question & Answers Cascode Amplifier Question & Answers Positive Feedback Amplifier Question & Answers BJT Amplifier Question & Answers Multi-Stage Transistor Amplifier Question & Answers Single Stage Transistor Amplifier Question & Answers Transistor Tuned Amplifiers Question & Answers Transistor Audio Power Amplifier Question & Answers Amplifier with Negative Feedback Question & Answers Operational Amplifier Question & Answers Please fill in the comment box below. Time is Up! Time's up
