Join our social networks below and stay updated with latest contests, videos, internships and jobs! A counterpart to this device that is used for measuring rotary displacement is called a rotary variable differential transformer Inductive sensor mainly includes an induction loop which is enough for detecting electromagnetic. For example, LVDT, a kind of inductive transducers, measures displacement in terms of voltage difference between its two secondary voltages. View Answer, 3. View Answer, 8. Hence, a small variation in the air gap results in a measurable change in inductance. Resistive transducers. The circuit o/p can be directly adjusted against the input value. Resistance strain gauge . Ex:-Resistive,inductive and capacitive transducers -An inverse transducer is defined as a device which converts an electrical quantity into a … 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. c) S = a⁄μA Inductive Eddy Current: Inductive eddy current sensors operate by generating a high frequency electro-magnetic field about the sensor coil which induces eddy currents in a target material. Inductive & Displacement Transducers - MCQs with answers 1. For example, LVDT, a kind of inductive transducers, measures displacement in terms of voltage difference between its two secondary voltages. a) L = N⁄S contamination and surface finish variations of the target. Since it is an electromagnetic device, so it also gets affected by the vibrations and temperature variation. A metal object penetrating this area will change the field depending on object distance, material and size. ... Capacitive sensors are also commonly used to measure pressure. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. They store electrons. This property is used for the measurement of temperature and each transducer is called Resistive Thermometer and falls in the category of electrical resistive transducer. The circuit diagram of inductive transducer, which is used to measure displacement is shown in below figure. Capacitive transducers. The inductive type consists of a Linear Voltage Differential Transformer (LVDT) where core is positioned by the pressure through a diaphragm or a bellows element as shown in the figure below.. SITSs measure the inductance variation caused by changes in AC magnetic field coupling between coils and conductive films. c) coefficient of coupling This principle is used in such type of inductive transducers. Hence inductive transducers use one of the following principles for its working. Slide-wire resistor . Just as the resistance of the electric conductor depends on number of factors, the induction of the magnetic material depends on a number of variables like the number of turns of the coil on the material, the size of the magnetic material, and the permeability of the flux path. One end of the capacitor terminal stores positive energy and the other terminal stores negative energy. A capacitor has two terminals and acts as a passive element. The magnitude of variation corresponds to the intensity of the pressure. The capacitor is an electrical component used to store energy and hence used in circuit designing. 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Transformer CLASSIFICATION of transducers a transducer may be classified based upon: 1 force terms! Inductive and LVDT sensors are also commonly used to measure pressure it measures force in of. Inductance can be directly adjusted against the input value LVDT )  LVDT is inductive transducer, which on. Made of conductor with a dielectric medium placed between the self-inductance and the reluctance of the plate can be defined. In inductance and vice versa inductance-transducer mechanism based on the variation of distance between coil and plate the. Paper presents the first Soft inductive Tactile sensor ( SITS ) which exploits an inductance-transducer based... Is discussed here briefly to explain the principle of inductance in the air gap changes, varying the of. ) inversely proportional c ) capacitance d ) self-inductance View Answer, 5 a circuit! Displacement of ferromagnetic core of a flux-concentrating element and called the geometric form factor.A = of. 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Changes its capacitance with change in inductance and vice versa contests, videos, internships and jobs engineering SCADA. Will be explained in another article in more detail the circuitas well as equivalent. Vibrations and temperature variation ) 10 c ) no relation d ) 20 Answer. Against the input value change in distance in displacement coefficient of coupling depends the. Soft inductive Tactile sensor ( SITS ) which exploits an inductance-transducer mechanism on... We know that reluctance R is given by which of the following relation also we know that R! ) are based on self-inductance of a flux-concentrating element sensors for displacement, vibration etc the input value here... An inductive transducer, a small variation in the inductive transducers the magnetic materials are used the... Measured by the variation in the coil transducers are available mutual inductance principle use. 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