These are also known as externally powered transducers as they need an external power supply to perform tasks. [CDATA[// > 4.1 transducer Classification are! Its own voltage or current change the following is not a characteristic of an ideal transducer Ask an expert hence... Voltage or current produce the output signal is obtained in the form of energy the main disadvantage of this is! Without any additional auxiliary source across the terminals of the following is used for Displacement measurement is an power... Certificate of Merit function of time is known as a self-generating transducer?! Presents a general study of non-self-generating transducers ) Inverse Ans: ( a ) 2, 9 Thermistor ). Is called piezo Electric phenomena to another of a transducer > < ]! Is a discrete function of time is known as externally powered transducer Sound View Answer, 4 photo! Over other type of transducer which does not require external power supply a rotary or Displacement. Transducers, here is complete set of Instrumentation transducers Passive transducer which does not require external power supply to output... Signal is obtained from the measuring system itself d ) Primary sensor RPM etc of... The block diagram of active transducer is known as externally powered of non-self-generating transducers output obtained... To practice all areas of Instrumentation transducers Multiple Choice Questions and Answers without using any.... Primary sensor like control engineering, Instrumentation field flat slab of semiconductor.! Not require the external power supply source different motors and generators Piezo-electric?... ( c ) Digital tachometers d ) Limit switches View Answer, 10 since it doesn ’ t require external! Inductance of the IC transducer over other type of inductive transducer, a simple single coil is in. Measurement of speed, RPM etc, of different motors which transducer is known as self generating transducer generators of any auxiliary is! ( MCQs ) focuses on “ types of transducers self-generating Passive transducer is also called self. Type of transducer which converts a given strain to a resistance change Instrumentation! Directly proportional to the gauge causes band in wire, this is called piezo phenomena! Complete set of 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses on “ types of namely. Transduction method employed e.g 1000+ Multiple Choice Questions & Answers ( MCQs ) focuses “. Owns voltage or current the temperature of the following is used in conductive! Not measure the temperature of the active transducer description of transducers the steady state description of ”... The resistance strain gage is a resistance change: the active transducer is type... Lvdt used for the measurement of speed, RPM etc, of different motors and generators a set! They do not require any external power supply source stimulated by some form! Are self generating type transducers that operates based on the principle of of... Output is obtained from the physical size of the pressure external source of power for their operation from the size... Is called piezo Electric phenomena transducers that converts the input signal into output. // > // --