Transducer Applications. 2-Which of the following form the basis of Electrical domain? Mainly, the electrical transducers can be classified into the following two types. Factors in Choice Many factors must be considered when selecting which type of transducer to use for a task: sensitivity; range; temperature coefficient; linearity; size; cost; C. Types of Transducers i. MBR LOTS JAMMU BRG ⇒ The z-transform of sequence x = δ is 1 ∞ 0 z ⇒ A fully controlled bridge converter feeds a highly inductive load such that the load current can be assumed to be constant. A transducer that converts measurand into the form of pulse is called a) Active transducer b) Analog transducer c) Digital transducer d) Pulse transducer Ans : (d) 4. Speed of Response: It is the rapidity with which the transducer responds to changes in the measured quantity. Ø These transducers develop an electrical parameter (i.e. By transduction used. Strain gauge. But since the energy from the strained element is very small, the energy for the output is provided by an external power supply. In this case, sensitivity is reduced but other advantages, as the reduction of the transducer dead zone for pulse-echo operations, can be achieved. Wave speed B. 4. Strain gauge is a . Alternatively, a transducer is defined as a device which provides usable output response to a specific input measured which may be a physical quantity. Active Transducers; Passive Transducers; Active Transducers. Active Transducers. This transducer can be operated in conventional pulse-echo mode, with a performance similar to other conventional air-coupled transducers, or in a dual mode (transmit with the piezocomposite and receive with the active matching layer). 1. On the contrary, a passive transducer converts a form of energy into another (electrical) by making use of an external source of power.. The applications of transducers based on the electric parameter used and the principle involved is given below. Which transducer is known as ‘self-generating transducer’? d Coupling medium. b operate on the basis of the photoelectric effect. Passive Type Transducers. A Strain gauge. 4. Which of the following is a digital transducer? For example, a Strain Gauge is an Active Transducer, in which the strain is converted into resistance. Before coming to the answer of this question I want to clear the concept of Active and Passive transducer or sensors: Active transducers/ Sensors generate electric current or voltage directly in response to environmental stimulation. Explanation of Each Types of Transducers: Classification based upon Principle of … The transducer is of many types, and they can be classified by the following criteria. The active elements of the diagnostic ultrasound transducer. a) Strain gauge b) Thermistor c) LVDT d) Thermocouple View Answer. as a primary and secondary transducer; as a passive and active transducer; as analogue and digital transducer ; as the transducer and inverse transducer; The transducer receives the measurand and gives a proportional amount of output signal. B. Thermistor. Passive and Active transducers; Analog and Digital transducers; Transducers and Inverse transducers . Apart from this, transducers are classified into following types: Primary and Secondary Transducer; Passive and Active Transducer; Analog and Digital Transducer; Transducers and Inverse Transducer; This classification in shown below in pictorial form to have better grasp of the subject matter. The transducers are classified on the basis of the principle of transduction such as resistive, inductive, capacitive, etc. Direct the sound out of the transducer B. asked Apr 14, 2018 by anonymous. The wave shape of input current is dc sinusoidal rectangular none of the above 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. Constantan is used for measurement of dynamic strains. Which of the following improves sound transmission from the transducer element into the tissue? B. a) Thermocouple b) Thermiston c) strain gauge d) LUDT 2 See answers roshansingh808157 roshansingh808157 Answer: Thermocouple(a) Explanation: Hope tis helps you. The electromagnetic transducer is self-generating active transducers. Ø Active transducers are self-generating type of transducers. 1-Which of the following is not covered under Mechanical energy domain? Other articles where Active transducer is discussed: transducer: The active transducers generate electric current or voltage directly in response to stimulation. b. D. Active device and converts electrical displacement into a change of resistance View Answer / Hide Answer. a may be crystalline material. Although not generally thought of as transducers, photocells, LEDs (light-emitting diodes), and even common light bulbs are transducers. ANSWER: C. Passive device and converts mechanical displacement into a change of resistance . Frequency C. Hertz D. 10. A. Active Transducer A transducer which requires energy to be added, for example a photo resistor. solar cell, thermocouple etc.). (A) Thermocouple (B) Piezoelectric pick-up; The following should be considered while selection a transducer: - Which one of the following frequency meter is suitable for measuring radio frequency? D. Thermocouple. 4. Transducers are often employed at the boundaries of automation, measurement, and control systems, where electrical signals are converted to and from other physical quantities (energy, force, torque, light, motion, position, etc.). a) the propagation speed of the ultrasound transducer's matching layers b) the thickness of the transducer's backing material c) the impedance of the transducer's matching layer d) the propagation speed of the transducer's active element c convert electrical energy into mechanical energy. A transducer is a device that converts energy from one form to another. SamVarghese SamVarghese Answer: Thermocouple is an active transducer. c Damping material. A duplex scanner. B Encoder. Report Errors. Thus it does not require any battery supply for conversion (e.g. a. which force oppertates … A shear waves c. A surface wave d. A lamb wave. D LVDT. B. An ultrasound unit, which can display two-dimensional images and A mode at the same time, is called . False. A. The major difference between active and passive transducer is that an active transducer has the ability to convert one form of energy into another form (electrical) without using an external source of power. B. D. None of the above. 3. Usually a transducer converts a signal in one form of energy to a signal in another. Ø They can be subdivided into the following commonly used types . This is the first type of classification of a transducer. A Active transducers. This will make the measurement system very compact. Active Transducers; Passive Transducers; Now, let us discuss about these two types of transducers briefly. D Primary transducers. An example is the thermocouple; here, the fact that a current will flow in a continuous circuit of two metals, if the two junctions are at different temperatures, is used to generate electricity.… 27 views 1 answer. Size: The transducer should have smallest possible size and shape with minimal weight and volume. The electrical energy pulse is generated from an instrument such as a flaw detector. Which of the following represent active transducer? True. New questions in Physics . Which of the following waves is only able to travel through a thin section of material? 5. A transducer is an electronic device that converts energy from one form to another. View Answer. It is an alloy of A. In Active Transducers, the energy from the input is used as a control signal in the process of transferring energy from power supply to proportional output. With a phased array scanner, there are many active elements which are being … Q5. Inductive transducer: (A) Distance (B) Latent heat (C) Force (D) Size. The active transducer generates its own electrical voltage during conversion. C. A C mode scanner. C Analog transducers. Position . 0 like 0 dislike. C. LVDT. It will also then receives back ultrasonic energy and converts it to electrical energy. d. All of the above. Classifications of transducers – broadly the transducers are classified into two main types: active transducers and passive transducers. Which of the following represent active transducer? (A) Current (B) Resistance (C) Inductance (D) All of the above. Objective Question. c. Edge notches. Passive device and converts electrical displacement into a change of resistance . Active Transducers . Classification of transducers. Classification of Transducers based on transduction Principle. Side drilled holes. a) Strain gauge b) Encoder c) Thermistor d) LVDT Ans : (b) 5. The active element is a piezoelectric or single crystal material which converts electrical energy to ultrasonic energy. Ø These transducers do not require any external source or power for their operation. b Doppler effect. Question:14. Active device and converts mechanical displacement into a change of resistance. No Solution. The speed of response of the transducer should be as high as practicable. An ultrasonic transducer is made up of an active element, a backing, and wearplate. A commpound scanner. ⇒ Which of the following is not valid integer variable in FORTRAN 77? A. Following transducer is an active transducer: Which one of the following is not a transducer in the true sense? Resistance Strain Gauge – The change in value of resistance of metal semi-conductor due to elongation or compression is known by … Based on whether the transducer is active or passive. Answer: d Explanation: Active transducers are self-generating type, they don’t require external power to work while passive transducers require external power to work. There are many active elements, which are firing at almost the same time in a mechanical scanner. Artificial flaws can be produced by using: a. a Matching layer. A longitudinal wave b. Which of the following is most important in the determination of the frequency of the sound? voltage or current) which is proportional to the quantity under measurement. Based on its working transducers are classified into the following; Electric and Non-Electric Transducers; Active and Passive Transducers; Primary and Secondary Transducers ; Analog and Digital Transducers Electric and Non-Electric Transducers: Electronic Transducers are that type of transducers that convert one form of energy to an electrical structure of energy, for Example, microphone. A. 61) The purpose of the backing material in a transducer is to: A. Flat bottom holes. a. View Answer Answer: Analog transducers 16 Which of the following is a digital transducer? In this type of transducers, the input energy can be used as a control signal while transmitting energy using a power supply toward the proportional output. 5. A)passive transducers B) active transducers C) Digital D) output transducers Correct Answer : active transducers Q :A photo diode functions are A)photo conductive device while working with reverse voltage B) photo voltaic device while working with out reverse voltage C) photo voltaic while working with or with out reverse voltage B. The diameter of the active element of a transducer helps to determine the frequency of the US produced by the transducer True - it also is used to improve image quality The damping material in a transducer acts to decreased the sensitivity. Derive:- Energy = Magnetic fields × Length of conductor. C Thermistor. For a closed loop controlled d.c. drive, current limit control (CLC) is normally employed. Common examples include microphones, loudspeakers, thermometers, position and pressure sensors, and antenna. In passive transducer, it requires externalbattery supply. B Passive transducers. 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