a) Velocity The passive Transducer is that type of Transducer which converts one form of energy into another way with the use of any auxiliary source. Usually, the measurand could be a rotary or linear displacement, force, pressure, torque, velocity, acceleration, and vibration. These transducers draw the energy needed for their operation from the measuring system itself. These kinds of transducers are also known as self-generating transducers as they do not need any external power source. b) Low linearity Book Measurement and Instrumentation in Engineering. Expert Answer . False. What is the relation between scale factor and sensitivity of a transducer? Sanfoundry Global Education & Learning Series – Instrumentation Transducers. c) Rochelle salt Therefore they are also called as self generating type transducers. Measurement and Instrumentation Objective Questions 1. Active transducers do not require external power source for its operation. They work under energy conversion principle. c) LVDT The output voltage found is directly proportional to the magnitude of the pressure. Electromagnetic transducer: The electromagnetic transducer is self-generating active transducers. Which of the following can be measured using Piezo-electric transducer? 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Which of the following is used in photo conductive cell? Explanation: Active transducers are self-generating type, they don’t require external power to work while passive transducers require external power to work. When it is exposed to the light, it resistance falls to a few ohms so this way the photoconductive cell is used as a light transducer. Self generating type transducers are _____ transducers. There are 3 basic types of transducers namely self-generating, modulating, and modifying transducers. In Inductive transducers, the basic principle is that self-inductance of a single coil or the mutual inductance between two coils is changed by a quantity to be measured i.e. By Francis S. Tse, Ivan E. Morse. Test electrode is also known as. Such type of transducer develops theirs owns voltage or current, hence known as a self-generating transducer. Show transcribed image text. resistance-changing, reactance-changing, electromagnetic (2) the quantity to be measured e.g. Transducer plays a key role in different fields like control engineering, instrumentation field. The circuit o/p can be directly adjusted against the input value. b) Scale factor is inverse of sensitivity View Answer, 9. It is a self-generating transducer. Click here to navigate to parent product. This chapter presents a general study of non-self-generating transducers. b) Strain gauge For Example, solar cells, photovoltaic cells. View Answer, 6. A) Reference electrode B) Indicator electrode C) Primary electrode D) Second electrode It is also called self-generating transducer, since it doesn’t require any external power supply. All Rights Reserved. The hall element is a small thin and flat slab of semiconductor material. When pressure is increased on the top surface of the crystal a potential difference is developed across its opposite ends which are connected to the out put terminals. Circuit output is a resistance change: The resistance strain gage is a passive (as opposed to self-generating) sensor. An active transducer is a self-generating type transducer that has the ability to generate electrical voltage or current as its output without using any external source of power. Throughout electromagnetic transduction, the measurement spectrum is transformed to voltage caused by a change in the magnetic flux in the conductor, in the absence of excitation. Question: LVDT Used For Displacement Measurement Is An Externally Power Operated Transducer A Self-generating Passive Transducer A Capacitive Transducer A Digital Transducer Next. This question hasn't been answered yet Ask an expert. The output of passive transducers depends on signal from external power supply. State description of transducers The steady state description - reveals characteristics of transducers Note! a) Geophone b) Displacement