4. Selection of a transducer is one of the most important factors which help in obtaining accurate results. Hence, we will get the following three active transducers depending on the non-electrical quantity that we choose. Transducers play an important role in the field of instrumentation and control engineering. Answer to Which of the following is active transducer ? Definition: The transducer which does not require any external power source to produce output is called Active transducer. It should have high input impedance and low output impedance, to avoid loading effect. 1. In general, the process of transduction involves the conversion of one form of energy into another form. The temperature coefficient of thermistor is negative. Engineering. Join now. The piezo-electric effect exhibited by these three substances is Tourmaline, Quartz, and Rochelle salts, in this ascending order. Consider a constant reference temperature, $T_{2}$ at junction 2. any device which converts one form of energy to another form of energy Examples of transducers lights, speakers, heaters, engine, microphones, lasers, ultrasound This process mainly includes a sensing element to sense the i… As shown in the figure, quartz crystal is placed between base and force summing member. Thermocouple, Photovoltaic cell and more are the best examples of the transducers. a) Strain gauge b) Thermistor c) LVDT d) Thermocouple View Answer. A transducer is a device that converts one type of energy to another. Transducers- definition,types,passive and active transducer,Resistance,Inductance,Capacitance,Voltage,Current type,piezo-electric transducer. Passive Transducer. In a simple probe, the active element is shaped like a coin. First let’s discuss about two main types of transducers which we use everyday in our industrial life. An active transducer is said to be piezo electric transducer, when it produces an electrical quantity which is equivalent to the pressure input. thermocouple strain gauge RTD Thermistor Mathematically, the relation between resistance of thermistor and temperature can be represented as, $$R_{1}=R_{2}e^\left ( \beta \left [ \frac{1}{T_{1}}-\frac{1}{T_{2}} \right ] \right )$$, $R_{1}$ is the resistance of thermistor at temperature ${T_{1}}^{0}K$, $R_{2}$ is the resistance of thermistor at temperature ${T_{2}}^{0}K$. Active and Passive Transducer . Find out information about active transducer. Find an answer to your question What is a transducer? Here input quantity is non-electrical quantity. What is the relation between scale factor and sensitivity of a transducer? Looking for active transducer? Photoconductive D . Explanation of active transducer Active transducer is a transducer, which converts the non-electrical quantity into an electrical quantity. Scale factor is double of sensitivity. (35) One of the following is active transducer (a) Strain gauge (b) Selsyn (c) Photovoltic cell (d) Photo emissive cell Question is ⇒ Which of the following is active transducer?, Options are ⇒ (A) Photoelectric, (B) Photovoltaic, (C) Photoconductive, (D) Photoemissive, (E) , Leave your comments or … Ask your question. Active transducers are those which do not require any power source for their operation. It should be able to withstand pressure, shocks, vibrations etc.. It is also called self-generating transducer, since it doesn’t require any external power supply. Step1 − The photo electric transducer releases electrons, when the light falls on cathode of it. The circuit diagram of basic thermocouple is shown below −. The principle of operation of variable resistance transducer is Photoelectric B . For example, a thermocouple is an active transducer. Any energy in a process should be converted from one form into another form to make the communication from one rectification sector to another. These transducers work only through the energy conversion principle, where they produce an electrical signal that is proportional to the input. Transducers and sensors are used in various appliances and gadgets but there is a difference between transducer and sensor which needs to be understood. The best examples of this transducer mainly include PV cell, thermocouple, etc. Ability to withstand environmental conditions. The above thermocouple circuit can be represented as shown in below figure for practical applications. Is one of the following two transducers are the differences between an and! Connected across the cold junction and it deflects according to the dimensions of the circuit diagram of transducer. The dimensions of the following is one of the following is an active transducer most important factors which help obtaining... 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