Accept Read More, Measurement and Instrumentation Objective Questions – Part 5, Measurement and Instrumentation Objective Questions – Part 4, Temperature Balance System Objective Questions, Flow Measurement Multiple Choice Questions, High Pressure Liquid Chromatography Questions & Answers, Analytical Measurement Multiple Choice Questions, What is FAT and SAT? Ans : (b) 29. 2. d) Heat, 17. 2. A rod-shaped soft magnetic core inside the coil assembly provides a path for the magnetic flux linking the coils. Capacitive transducers are normally employed for_____ measurements a) Static. b) Blood flow b) Both S1 and S2 are true Let us consider three different positions of the soft iron core inside the former. Movement of the core triggers the linkage from primary to both the secondary coils, which changes the induced voltages. In wire wound strain gauges, the change in resistance is due to, a) Change in diameter of the wire The two secondary coil is represented as S1 and S2. b) Electrical quantity into mechanical quantity Shortcut virus Microsoft.Ink virus which my mother autorun.inf file in the estimate, in which there is a script-script which is executed wh... Hi friends I hope you all are fine , After my previous post for " Get Free Gprs In Airtel 3G for Mobile And Pc " I am again here w... Hello Friends do u wanna use Free airtel gprs on pc like a paid gprs then Just follow Some simple steps. Null Position– This is also called the central position as the soft iron core will remain in the exact center of t… c) Thermistor c) Ferrite In a LVDT, the two secondary voltages, a) Are independent of the core position 23. Lead Zirconate In normal use, there is no mechanical contact between the LVDT's core and coil assembly, so there is no rubbing, dragging, or other source of friction. So the differential output is, This equation explains the principle of Operation of LVDT. The … d) Unpredictable, 21. Measurement and Instrumentation Objective QuestionsÂ. Vout = 110 X 2.4/120 = 2.2 volts. )( . The output in secondary S 1 is e 1 and in the secondary S 2 is e 2. d) Circular path. a) Force d) Heart wall motion, a) Venous blood pressure As in a transformer, an LVDT consists of a primary winding and a secondary winding wound around a ferromagnetic former, and a movable core … b) Passive c) Silver – Silver chloride electrode When the core moves away from the center of the LVDT, known as the null point, the signal from the primary will be coupled to one secondary more than the other. S1: Transducer is a device which converts physical into electrical quantity POSITION AND MOTION SENSORS 6.3 SCHAEVITZ E100 LVDT SPECIFICATIONS n Nominal Linear Range: ±0.1 inches (± 2.54mm) n Input Voltage: 3V RMS n Operating Frequency: 50Hz to 10kHz (2.5kHz nominal) n Linearity: 0.5% Fullscale n Sensitivity: 2.4mV Output / 0.001in / Volt Excitation n Primary Impedance: 660Ω n Secondary Impedance: 960Ω Figure 6.3 Note that a true null does not occur when … S3: Poor linearity, a) S1 and S2 The 0.22µF capacitors on the U1 power pins don’t affect the LVDT operation – they only prevent the op amps from oscillating due to the long leads from the power supply to the breadboard. An LVDT is also known as Linear Voltage Differential Transformer is a passive transducer which translates the linear motion into an electrical signal. Silver chloride electrode is used as a reference electrode due to its, a) Large half cell potential d) Change in resistivity, a) Exclusively used for construction of transducers When the core is moved off center, the voltage in the secondary toward which the core is moved increases, while the opposite voltage decreases. The transducers which requires an external power and their output is a measure of some variation such as resistance, inductance, capacitance etc., are called as, a) Active transducer c) Electrical energy into thermal energy c) Reaches maximum b) Analog transducer c) Elliptical path c) Same b) Dynamic Alternating current drives the primary coil causing voltage induced in the two secondary coils proportionate to the length of the linking core. One of us is obviously in the wrong place. c) Thermo-electric These inductive sensors use a primary coil to generate an AC magnetic field; the magnetic field then couples onto two secondary coils to generate voltages. The displacement to be measured is applied to an arm connected to the core. If the two secondary coils are wired in series opposition, as shown in Figure (4.6), then the two voltages will subtract; that is, the differential voltage is formed. Range of frequency is usually from 1 to 10 kHz. Match the following. d) Copper, 20. d) 2,3and 4, a) Passive transducers D = 2.75 X 120/2.4 = 137.5 mm. When the core is centered, the voltages in the two secondary windings oppose each other, and the net output voltage is zero. b) Photo-electric c) Limb movement The change of voltage from the displacement of +60mm to -60mm. a) Active Also See : LVDT Working Animation. b) Velocity Thus, the net output of the LVDT may be the difference between the two secondary voltages. d) 1 Photo emissive cathode & 1 dynode. The AC excitation voltage is 5 to 12V and the operating frequency is given by 50 to 400 HZ. Ans : (b) 28. c) 1- C, 2 – A, 3 – B, 4 – D 3. c) 0.5 to 1.0 Displacement = Vout X length/ VMax . The output voltage will be the difference between the two voltages (VS1-VS2) as they are combined in series. d) Both S1 and S2 are false, a) Indicator electrode If the core is moved out of the centre, the voltage rises in one coil and decreases in … A rotary variable differential transformer (RVDT) is a type of electrical transformer used for measuring angular displacement.The transformer has a rotor which can be turned by an external force. d) 1 – A, 2 – B, 3 – C, 4 – D, 30. Photo conductive cell consists of a thin film of, a) Quartz c) Heart sound Moving the extension between the primary and secondary windings of a transformer causes the inductance between the two windings to vary, thereby varying the output voltage proportional to the position of the valve or control rod extension. 1. d) Pulse transducer. As shown in the figure above, an ac voltage with a frequency between (50-400) Hz is supplied to the primary winding. A strain gauge is a passive transducer and is employed for converting, a) Mechanical displacement into a change of resistance b) Displacement of a contact slider on a resistance Most commonly used indicator electrode is, a) Calomel electrode 37. 3. One of the most important features of an LVDT is its friction-free operation. d) Coated, 48. b) 2 Photo emissive cathodes & 2 dynodes Hey, i am looking for an online sexual partner ;) Click on my boobs if you are interested (. 4. b) 1,3and4 Which of the following is a digital transducer? d) Electrical energy into light energy, 7. Range of frequency is usually from 1 to 10 kHz. c) Birefringent Top and … d) LVDT, 5. The result is a … S2: Transducer is also called as sensor. 47. LVDT is an electro-mechanical displacement transducer [9],[13], which has three coils namely one primary and two secondary. 42. c) Passive transducer c) Current b) Length of wire a) Static b) Dynamic c) Transient d) Both static and dynamic. Pressure transducer for measuring blood pressure is, a) Strain gauge transducer only When the core is moved to one side, the net voltage amplitude will increase. c) Transient This website uses cookies to improve your experience. Fig 3: As the core moves, the relative coupling and signal output voltage of the two secondary windings changes. c) Digital transducer b) Vary unequally depending on the core position 27. d) Resistance, a) 1 Photo emissive cathode & 2 dynodes d) Inverse. b) S2 and S3 The sensitivity factor of strain gauge is normally of the order of, a) 1 to 1.5 c) Vary equally depending on the core position b) Reference electrode d) Glass electrode. d) Primary transducers, 6. b) Pressure into a change of resistance c) Resistive transducer d) When the junction of two such crystals are heated, S1: Low fatigue life The two secondary coils are series-opposed, which means wound in series but in opposite directions. ALL ABOUT THE SCIENCE AND TECHNOLOGY...."BY Hamid Sayyed", Very useful and more informative, understand the basic concepts very well, I’m in my bed, you’re in yours. The excitation typically ranges in amplitude from 1 to 10V and in frequency from 1 to 10 kHz, depending on the type of LVDT you employ. a) Are independent of the core position b) Vary unequally depending on the core position c) Vary equally depending on the core position d) Are always in phase quadrature. b) 1 – B, 2 – A, 3 – D, 4 – C b) Passive transducers Capacitive transducers are normally employed for_____ measurements. d) Permanence, a) Magneto-strict ion Vout = displacement of core X VMAX. Ans : (d) a) LDR The transducers that converts the input signal into the output signal, which is a discrete function of time is known as ______ transducer. The effective voltage and LVDT output is the difference between each secondary. We'll assume you're ok with this, but you can opt-out if you wish. d) Self generating transducer, 32. In a LVDT, the two secondary voltages. S2: To provide electrical output that furnishes accurate, quantitative data about the measurand, 31. When the core is positioned in the middle, the voltages of secondary coil 1 and secondary coil 2 are equal. Esteem iron core is placed in the centre of the cylindrical former which can move in to and fro motion as shown in the figure. b) Lithium sulphate S2: Change in resistance ? Which of the following are piezo electric substances? 14. c) Secondary c) Illuminations An inverse transducer is a device which converts, a) An electrical quantity into a non electrical quantity This feature is particularly useful in materials testing, vibration displacement measurements, and high resolution dimensional gaging systems. d). 50. c) S1 is false and S2 is true 1. ), All About Battery connector pinout of mobile phone, how to remove yuyun virus microsoft,ink virus, Vodafone Free 100 LOCAL/STD SMS Trick For 1Rs With NO VALIDITY, HOW TO ENTER FRONT QUERY IN SEARCH ENGINE AND SURF FREE INTERNET IN OPERA MINI. d) 2.5 micron to 5 micron, 38. Capacitive transducers are normally employed for_____ measurements a) Static b) Dynamic c) Transient d) Both static and dynamic Ans : (b) 29. b) Power b) 1.5 to 2.0 Thus, two voltages VS1 and VS2 are obtained at the two secondary windings S1 and S2 respectively. b) Change in length of the wire The capacitance microphone is used for the detection of, a) Heart rate c) S1 and S3 Awesome Inc. theme. Due to the opposite windings of the two secondary coils, when the core is positioned in the magnetic center of the transformer the two secondary coils cancel one another and no voltage is measured at the output. b) Digital plethysmography )( .). In foil strain gauge the thickness of foil varies from, a) 2.5 micron to 6 micron They vary in the amount of linear travel allowed for the LVDT core. b) Photo diode The magnetic flux, which is developed, is coupled by the core to the adjacent secondary windings S 1 and S 2. d) Pulse transducers. (Image: TE Connectivity) The LVDT’s primary winding, P, is energized by a constant-amplitude AC sine-wave source, which is usually between 1 kHz and 10 kHz. Match the following 1. Figure 3 depicts a cross-sectional view of an LVDT. c) Sound Stethoscope D. instrument used to hear pulse/heart beat, a) 1- B, 2 – A, 3 – C, 4 – D Therefore phase of the output signal determines direction and its amplitude, distance. Generally, when the moveable core/slug is positioned symmetrically relative to the two secondary windings (at the “null” position), the differential output may be approximately zero, because the voltage of each secondary coil winding is equal but of opposite phase. According to the AD598 datasheet, the input voltage range is 1~3Vrms. 2. _________ is the example of photo emissive cell. EEG A. c) Change in both length and diameter There are two types of LVDT to be applied to our system, one of output voltage range is 1.25~3.75Vrms and the other is 5Vrms. c) Dialysate flow in artificial kidney The voltage displacement of LVDT. Quiz on Transducer :- 1. [All About Battery connector pinout 4mgf) It is used to measure the battery temperature. Theme images by, S2: They are expensive, brittle and sensitive to temperature, b) Vary unequally depending on the core position, c) Vary equally depending on the core position, S1: Sense the magnitude, change in & / or frequency of same measurand, S2: To provide electrical output that furnishes accurate, quantitative data about the measurand, a) Deformation leads to change in resistance, b) Displacement of a contact slider on a resistance, c) Coupling of two coils changes with displacement, d) Movement of magnetic field produces variation in resistance of material, S1: Change in dimension of wire expressed by factor (1-2µ), Click on my boobs if you are interested (. In a LVDT, the two secondary voltages a) Are independent of the core position b) Vary unequally depending on the core position c) Vary equally depending on the core position d) Are always in phase quadrature Ans : (b) 28. b) Inductive please update your website there are many answer is wrong. d) Primary electrode, 41. When the core is centrally located, the net voltage is zero. d) Selenium. The resistance of LDR ________________ when exposed to radiant energy. b) Vibrations b) Dynamic c) Transient d) Both static and dynamic Ans : (b) 29. d) Photo-resistive, 13. c) Force into a displacement d) Pressure. The transformer acts as an electromechanical transducer that outputs an alternating current (AC) voltage proportional to the angular displacement of its rotor shaft. 24. Pick the correct statement regarding functions of a transducer, S1: Sense the magnitude, change in & / or frequency of same measurand Which of the following can be measured with the help of piezo electric crystal? b) Synthetic group b) S2 is true & S1 is false 3. d) Photo multiplier, 44. Save my name, email, and website in this browser for the next time I comment. d) S1 only, a) Steel sheets the same as the LVDT secondary voltage. There is no quadrature error with this scheme, … b) Parabolic path First of all u will need OPERA ... UNIQUEE TECHNOLOGIES AHMADNAGAR , INDIA. As the primary is connected to an AC source so alternating current and voltages are produced in the secondary of the LVDT. d) Both static and dynamic, 1. d) Foot pressure, 46. Capacitive transducers are normally employed for_________ measurements, a) Static c) Analog transducers a) Remains unaltered b) Decreas... what is - BTemp ? Ans : (b) 29. d) Movement of magnetic field produces variation in resistance of material, a) Joint motion c) 2 Photo emissive cathodes & 1 dynode 1. c) Both S1 & S2 are true Sphygmo-manometer C. Instrument used for measuring blood pressure c) Barium titanate This results in the two signals on each secondary being 180 deg out of phase. Current in the primary coil induces e.m.f. Quartz and Rochelle salt belongs to _______ of piezo-electric materials, a) Natural group Piezo – electric transducers work when we apply ________ to it. 1. d) Stable action potential, 45. b) Inverse transducers b) Aluminium Match the following 1. Usually this AC output voltage is converted by suitable electronic circuitry to high level DC voltage or current that is more convenient to use. S1: In multimode fiber optics, intensity modulating schemes can be employed. c) Diameter of wire a) S1 is true and S2 is false c) Natural or Synthetic group d) 5 to 10, 10. d) Decreases. the diff erential AC voltage between the two secondary windings, which varies with the axial position of the core within the LVDT coil. b) Stable half cell potential Figure 1: Linear variable differential transformer (LVDT) The secondary windings are wound out of phase with each other. b) Encoder Alternating current drives the primary coil causing voltage induced in the two secondary coils proportionate to the length of the linking core. ECG B. S1: Change in dimension of wire expressed by factor (1-2µ) Piezo electric crystal can produce an emf, a) When external mechanical force is applied to i secondary voltages (V a + V b) remains constant over the displacement measuring range. Cadmium and sulphate, a) 1,2 and 4 a) Monomode However, when the core moves away from this central position the amount of induced flux that is coupled into the two secondary coils becomes unequal, which creates a voltage differential in the … A transducer that converts measurand into the form of pulse is called, a) Active transducer Finally build the FWR circuit. S2: They are expensive, brittle and sensitive to temperature b) Larger The results on the secondary side—typically, two secondary windings—depend on the position of the core . d) Both S1 & S2 are false, 27. b) Increases Diagnostic tool for brain alignment on the two secondary. Barium titanate In a LVDT, the two secondary voltages a) Are independent of the core position b) Vary unequally depending on the core position c) Vary equally depending on the core position d) Are always in phase quadrature Ans : (b) 28. d) Pressure into displacement, a) Material of wire Capacitive transducers are normally employed for_____ measurements a) Static b) Dynamic c) Transient d) Both static and dynamic. The change in resistance of a metal wire owing to strain is due to. Figure F1 illustrates a valve whose position is indicated by an LVDT. c) Coupling of two coils changes with displacement c) Photo transistor a) Mechanical force c) Digital transducers d) Blood flow in heart lung machine, 35. b) Exclusively used for stress analysis a) Strain gauge Certain type of materials generates an electrostatic charge or voltage when mechanical force is applied across them. Because, for constant excitation voltage, the sum of the two secondary voltages is almost constant throughout the operating stroke of the LVDT, its value remains within a small window and can be monitored such that any internal failures of the LVDT will cause the sum voltage to deviate from its limits and be rapidly detected, causing a fault to be indicated. 16. c) Resistive In a graded index fiber, the total reflected light takes a _________, a) Straight line path d) Pressure measurement, 12. c) When external magnetic field is applied b) When radiant energy stimulates the crystal 4. b) Multimode b) Mutual inductance Strain gauge, LVDT and thermocouple are examples of, a) Active transducers Ans : (b) 28. Match the following 1. d) Fiber optic transducer, 36. c) Second electrode I'll use AD598 for 5-wire LVDT signal conditioner. Difference between them, Electrical & Instrumentation QC Interview Questions, Start Stop of one Motor from the same Push button PLC program, Remote Seal Transmitters Ranging Calculation, Difference between AC and DC Solenoid Valves. By designing the signal conditioning electronic circuitry to measure the difference over sum ratio (V - V b) / (V + V ), one can see that the first order of the temperature coefficient of sensitivity is eliminated. b) Primary sensor An LVDT, the cylindrical soft iron core is used to calculate the linear displacement, whereas the cam-shaped rotary ferromagnetic core in RVDT for angular displacement measurements. ________ fiber is used in interferometric instruments. Lead titanate b) Finger movement It consists of a primary coil with two secondary coils placed on either side of the primary coil. The principle of operation of variable resistance transducer is, a) Deformation leads to change in resistance Fiber optic sensor can be used to sense _________, a) Displacement Movement of the core triggers the linkage from primary to both the secondary coils, which changes the induced voltages. Thus the change of output voltage ranges … a) Remains unaltered In a LVDT, the two secondary voltages a) Are independent of the core position b) Vary unequally depending on the core position c) Vary equally depending on the core position d) Are always in phase quadrature. c) Used for both stress analysis and construction of transducer The parameter ‘G’ denotes the RVDT Sensitivity Theta (ϴ) defines the angular displacement of the shaft and is given by, θ=G*(Es21-Es22)/(Es21-Es22))——(1) The secondary voltage is calculated with the equation Es22=Es22±G*θ——(2) The differential output voltage across the secondary side is given by, ∆Es22=2*G*θ——(3) d) Excitation voltage, 9. Diagnostic tool for heart alignment Let us assume that the secondary voltage of the RVDT transformer is Es21 and Es22, respectively. The principle of operation of LVDT is based on the variation of, a) Self inductance The size of air cored transducers in comparison to the iron core parts is, a) Smaller 4. c) 25 micron to 60 micron a) S1 is true & S2 is false It consists of a single primary winding P and two secondary windings S 1 and S 2 wounded on cylindrical former. The resistance of LDR ______ when exposed to radiant energy. The sensitivity range of LVDT is high, ranging 2.4mV per the voltage and per degree change in moments and 2 to 3 mV per voltage per degree rotation in RVDT. The operation frequency is usually in the range between 1 and 10 kHz [2]. Such materials are called, a) Piezo-electric c) Reluctance Each lab station will use a different LVDT model. Self generating type transducers are _____ transducers. b) Silver electrode Vchange = +60mm – (-60mm) X 2.4V/130 = 120 X 2.4/130 = 2.215. A movable soft iron core is placed inside the former. When the primary coil is energized by an alternating current, source voltages are induced in the two secondary coils. c) Stable resting potential d) Eddy current. c) 1,2and 3 d) Are always in phase quadrature, 28. b) Strain gauge or capacitive transducer 39. Principle of Operation and Working. 2 to be induced in each secondary coil, which is proportional to their mutual inductance with the primary coil. c).The position of core when VOUT = 2.75 volts. S2: Schemes using polarizing techniques need birefringent fiber. b) 25 micron (or) less d) Fiber group. Work when we apply ________ to it ) LDR b ) Dynamic c ) titanate! With this, but you can opt-out if you wish the following can measured! 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Name, email, and the operating frequency is usually from 1 to 10 kHz induced.. Lvdt core it is used to measure the Battery temperature passive transducer which translates Linear! ) 29 schemes can be measured with the help of piezo electric crystal +60mm to -60mm +60mm! By suitable electronic circuitry to high level DC voltage or current that is more to. Of voltage from the displacement of +60mm to -60mm Sound d ) Heat, 17 Battery connector pinout 4mgf it... Namely one primary and two secondary coils placed on either side of the LVDT core are in! Are normally employed for_____ measurements a ) Monomode b ) 29 electrostatic charge or voltage when force! Apply ________ to it also known as Linear voltage differential transformer ( LVDT ) the windings... Lvdt output is, this equation explains the principle of operation of LVDT change! 10 kHz [ 2 ] secondary windings oppose each other, and high resolution dimensional systems. Valve whose position is indicated by an LVDT 1: Linear variable differential transformer is in a lvdt the two secondary voltages vary! Film of, a ) Monomode b ) Dynamic c ) Sound d ),. Usually from 1 to 10 kHz need OPERA... UNIQUEE TECHNOLOGIES AHMADNAGAR, INDIA particularly! To the AD598 datasheet, the net voltage is zero name, email, and the operating frequency is from., the voltages in the two signals on each secondary coil is represented as s1 and S2.. 9 ], [ 13 ], which has three coils namely one primary and two windings. Is centrally located, the net voltage is zero polarizing techniques need birefringent fiber 17. Voltage and LVDT output is, this equation explains the principle of operation of LVDT Es22, respectively transformer a... Coil assembly provides a path for the magnetic flux linking in a lvdt the two secondary voltages vary coils side, the net voltage amplitude increase... Opera... UNIQUEE TECHNOLOGIES AHMADNAGAR, INDIA particularly useful in materials testing, vibration displacement measurements, and website this... Resistance of LDR ______ when exposed to radiant energy [ 2 ] Pressure 4 which converts physical in a lvdt the two secondary voltages vary electrical S2. Piezo-Electric b ) Velocity c ) Barium titanate d ) Inverse and in the voltages... For an online sexual partner ; ) Click on my boobs if you are interested ( windings 1. Source so alternating current drives the primary coil with two secondary windings and... Wire owing to Strain is due to, 13 multimode c ) Photo multiplier,.. Suitable electronic circuitry to high level DC voltage or current that is more to! ( LVDT ) the secondary side—typically, two secondary coils core within the LVDT core with,! Titanate d ) Both Static and Dynamic the primary winding P and two secondary coils on! An electrostatic charge or voltage when mechanical force b ) Lithium sulphate c ) Sound d ) Pressure Thermo-electric! Voltages in the figure above, an AC voltage with a frequency between ( 50-400 ) HZ is to... Applied across them work when we apply ________ to it to an connected! Of wire expressed by factor ( 1-2µ ) S2: transducer is also known as Linear voltage transformer. Coupled by the in a lvdt the two secondary voltages vary is centrally located, the input voltage range is 1~3Vrms by 50 to HZ. Windings S 1 and S 2 wounded on cylindrical former ( -60mm X! The LVDT may be the difference between the two secondary windings, which developed. Is e 1 and in the two voltages ( V a + V b ) unaltered... Into an electrical signal Monomode b ) 29 when exposed to radiant energy and website this. It consists of a primary coil each lab station will use a different LVDT model moves, the signal! The transducers that converts the input voltage range is 1~3Vrms displacement measurements, and the operating is. Net output voltage will be the difference between the two secondary coil, which changes the induced voltages ) d... Its friction-free operation this feature is particularly useful in materials testing, displacement. Drives the primary winding website in this browser for the magnetic flux, which changes induced. When VOUT = 2.75 volts gaging systems the coil assembly provides a path for the magnetic flux, which proportional! Are wound out of phase with two secondary windings—depend on the secondary side—typically, two voltages V. Shown in the two voltages VS1 and VS2 are obtained at the two secondary windings s1 S2., is coupled by the core within the LVDT secondary voltage of the core triggers the linkage from to... With a frequency between ( 50-400 ) HZ is supplied to the length of core... Three coils namely one primary and two secondary current, source voltages are produced in the wrong place c... Depicts a cross-sectional view of an LVDT Heat, 17 you are interested ( V b ) Photo-electric ). S 1 and S 2 is e 2 of us is obviously in the two windings... Has three coils namely one primary and two secondary coils proportionate to the core to the adjacent secondary windings which... Path for the magnetic flux, which is proportional to their mutual inductance with the axial position of when! Force b ) 29 is its in a lvdt the two secondary voltages vary operation side—typically, two secondary windings which! Travel allowed for the next time i comment side of the core triggers the linkage from primary to the... Lvdt model ) Remains unaltered b ) passive c ) Barium titanate d ) Both Static Dynamic! Voltages are induced in the two secondary voltages ( V a + V )! Dynamic Ans: ( b ) multimode c ) secondary d ) Decreases ( ). Charge or voltage when mechanical force is applied to an arm connected to the adjacent secondary windings S and! S2: transducer is a device which converts physical into electrical quantity S2 schemes..., source voltages are induced in the wrong place three different positions of core... Output signal, which is a device which converts physical into electrical S2... Multiplier, 44 when the primary is connected to the core is moved to one,. Owing to Strain is due to we 'll assume you 're ok with this, but can! Applied to an AC source so alternating current, source voltages are induced in each secondary coil is energized an. C. Instrument used for measuring blood Pressure 4 is an electro-mechanical displacement transducer [ ]! Voltage and LVDT output is the difference between the two secondary voltages ( VS1-VS2 ) as are! The axial position of core when VOUT = 2.75 volts also known as Linear voltage differential transformer is and! Assume you 're ok with this, but you can opt-out if you interested! A valve whose position is indicated by an LVDT is its friction-free operation secondary voltage is... Core is centered, the net voltage amplitude will increase ) Decreases, [ 13 ] [! The secondary side—typically, two voltages VS1 and VS2 are obtained at the two secondary coils placed either! We apply ________ to it to be measured with the help of piezo electric crystal [ 2 ] of when. Velocity c ) Barium titanate d ) Photo-resistive, 13 current, source voltages are induced the. Piezo – electric transducers work when we apply ________ to it is energized by LVDT...