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This is the first type of classification of a transducer. A duplex scanner. A. B. New questions in Physics . A. 1. a) Thermocouple b) Thermiston c) strain gauge d) LUDT 2 See answers roshansingh808157 roshansingh808157 Answer: Thermocouple(a) Explanation: Hope tis helps you. The transducer is of many types, and they can be classified by the following criteria. A transducer is a device that converts energy from one form to another. Passive Type Transducers. Which of the following waves is only able to travel through a thin section of material? True. 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. A. b. For example, a Strain Gauge is an Active Transducer, in which the strain is converted into resistance. C. A C mode scanner. Ø They can be subdivided into the following commonly used types . Which of the following represent active transducer? Which transducer is known as ‘self-generating transducer’? ANSWER: C. Passive device and converts mechanical displacement into a change of resistance . D. Active device and converts electrical displacement into a change of resistance View Answer / Hide Answer. Which of the following represent active transducer? The classification of transducer-based on the source of energy can be done through two types which include the following. a. 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). D Primary transducers. Provide impedance matching between the active element and the test component C. Control the ringing of the active element D. None of the above 62) The number of cycles per second is the definition of: A. On the contrary, a passive transducer converts a form of energy into another (electrical) by making use of an external source of power.. 4. 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. It is an alloy of A. (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? 0 like 0 dislike. Usually a transducer converts a signal in one form of energy to a signal in another. 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. Resistance Strain Gauge – The change in value of resistance of metal semi-conductor due to elongation or compression is known by … Wave speed B. d Coupling medium. c. Edge notches. Q5. voltage or current) which is proportional to the quantity under measurement. 4. 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. Which of the following is most important in the determination of the frequency of the sound? Passive and Active transducers; Analog and Digital transducers; Transducers and Inverse transducers . The active elements of the diagnostic ultrasound transducer. Common examples include microphones, loudspeakers, thermometers, position and pressure sensors, and antenna. A Strain gauge. With a phased array scanner, there are many active elements which are being … Which of the following is a digital transducer? b operate on the basis of the photoelectric effect. The transducer, which can produce one of the electrical quantities such as voltage and current is known as active transducer. C Analog transducers. Compare active transducer with passive transducer based on working principle, example, advantage, application. b Doppler effect. Active Transducer A transducer which requires energy to be added, for example a photo resistor. a Matching layer. Derive:- Energy = Magnetic fields × Length of conductor. D LVDT. But since the energy from the strained element is very small, the energy for the output is provided by an external power supply. 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. Inductive transducer: The active transducer generates its own electrical voltage during conversion. B Encoder. Thus it does not require any battery supply for conversion (e.g. The wave shape of input current is dc sinusoidal rectangular none of the above Flat bottom holes. Size: The transducer should have smallest possible size and shape with minimal weight and volume. Classification of Transducers based on transduction Principle. D. Thermocouple. In passive transducer, it requires externalbattery supply. Transducer Applications. Position . (A) Distance (B) Latent heat (C) Force (D) Size. a) Strain gauge b) Thermistor c) LVDT d) Thermocouple View Answer. The applications of transducers based on the electric parameter used and the principle involved is given below. False. 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. Classifications of transducers – broadly the transducers are classified into two main types: active transducers and passive transducers. 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. View Answer. 61) The purpose of the backing material in a transducer is to: A. Active Transducers . 5. There are many active elements, which are firing at almost the same time in a mechanical scanner. Objective Question. Report Errors. 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 Classification of transducers. 27 views 1 answer. Resistance Variation Type. A commpound scanner. Active Transducers. Based on whether the transducer is active or passive. Constantan is used for measurement of dynamic strains. which force oppertates … (A) Current (B) Resistance (C) Inductance (D) All of the above. A Active transducers. 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. C. LVDT. Question:14. Direct the sound out of the transducer B. Other articles where Active transducer is discussed: transducer: The active transducers generate electric current or voltage directly in response to stimulation. Strain gauge. D. None of the above. Ø These transducers develop an electrical parameter (i.e. Active device and converts mechanical displacement into a change of resistance. It will also then receives back ultrasonic energy and converts it to electrical energy. 10. ⇒ Which of the following is not valid integer variable in FORTRAN 77? asked Apr 14, 2018 by anonymous. Alternatively, a transducer is defined as a device which provides usable output response to a specific input measured which may be a physical quantity. For a closed loop controlled d.c. drive, current limit control (CLC) is normally employed. Mainly, the electrical transducers can be classified into the following two types. A shear waves c. A surface wave d. A lamb wave. The transducers are classified on the basis of the principle of transduction such as resistive, inductive, capacitive, etc. 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. SamVarghese SamVarghese Answer: Thermocouple is an active transducer. In this case, sensitivity is reduced but other advantages, as the reduction of the transducer dead zone for pulse-echo operations, can be achieved. 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. Passive device and converts electrical displacement into a change of resistance . Frequency C. Hertz D. c convert electrical energy into mechanical energy. An ultrasonic transducer is made up of an active element, a backing, and wearplate. 3. 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.… The active element is a piezoelectric or single crystal material which converts electrical energy to ultrasonic energy. A transducer is an electronic device that converts energy from one form to another. 5. This will make the measurement system very compact. 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. B. Thermistor. Speed of Response: It is the rapidity with which the transducer responds to changes in the measured quantity. No Solution. Strain gauge is a . c Damping material. solar cell, thermocouple etc.). a may be crystalline material. 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. a) Strain gauge b) Encoder c) Thermistor d) LVDT Ans : (b) 5. Following transducer is an active transducer: Which one of the following is not a transducer in the true sense? 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.). 1-Which of the following is not covered under Mechanical energy domain? 1. Although not generally thought of as transducers, photocells, LEDs (light-emitting diodes), and even common light bulbs are transducers. Side drilled holes. B Passive transducers. An ultrasound unit, which can display two-dimensional images and A mode at the same time, is called . A. a. 4. The speed of response of the transducer should be as high as practicable. 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 2-Which of the following form the basis of Electrical domain? The electromagnetic transducer is self-generating active transducers. d. All of the above. B. Active Transducers; Passive Transducers; Now, let us discuss about these two types of transducers briefly. 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. Ø Active transducers are self-generating type of transducers. B. Artificial flaws can be produced by using: a. By transduction used. Explanation of Each Types of Transducers: Classification based upon Principle of … Ø These transducers do not require any external source or power for their operation. B. C Thermistor. View Answer Answer: Analog transducers 16 Which of the following is a digital transducer? Which of following represent active transducer? A longitudinal wave b. 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