Sensor types and transduction principles – MCQs – EE

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1. What is the primary function of a sensor?



2. The process of converting one form of energy into another is called:



3. Which of the following sensors is used to measure temperature?



4. A transducer is a device that:



5. A thermistor changes its resistance with:



6. Which of the following is a primary transducer?



7. A secondary transducer converts:



8. The working principle of an LVDT (Linear Variable Differential Transformer) is based on:



9. A strain gauge operates on the principle of:



10. A piezoelectric transducer works on which principle?



11. A photodiode converts:



12. The Hall effect sensor is used to measure:



13. A capacitive sensor measures displacement by:



14. The Seebeck effect is the basis of:



15. A phototransistor is sensitive to:



16. A resistive transducer converts:



17. The electromagnetic induction principle is used in:



18. Which transducer uses Coulomb’s law for its operation?



19. A piezoresistive sensor changes resistance due to:



20. The photoelectric effect is utilized in:



21. A tachogenerator is used to measure:



22. Which of the following is an active transducer?



23. Passive transducers require:



24. An RTD (Resistance Temperature Detector) is based on:



25. A potentiometer used as a transducer converts:



26. Optical encoders are used to measure:



27. The inductive proximity sensor detects objects based on:



28. In a thermopile, multiple thermocouples are connected:



29. A flow sensor using a hot-wire principle works based on:



30. The main advantage of smart transducers is:



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