Sensors and Instrumentations Chapter 1 Quiz
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Questions and Answers

What is a mechatronics system?

  • A system consisting of sensors and actuators (correct)
  • A system that only consists of controllers
  • A system containing transducers and instruments
  • A system that only includes sensing units

    • What are transducers?

  • Devices that convert electrical voltage into measurable quantities
  • Devices that transform magnetic fields into sound pressure levels
  • Devices used to convert one form of energy to another (correct)
  • Devices that transform electrical signals into other forms of energy

    • What is the function of an actuating unit?

  • Convert measurable quantities to electrical voltage or current
  • Receive commands from the controller and produce physical action (correct)
  • Receive information from the sensing unit and make critical decisions
  • Transform electrical signals into various forms of energy

    • What does an instrument refer to in the context of sensors?

    <p>A sensor together with some of its associated electronics</p> Signup and view all the answers

    What is the role of the sensing unit in a closed loop control system?

    <p>Provide information to the controller based on external factors</p> Signup and view all the answers

    What is the main purpose of a sensor in a measurement system?

    <p>Convert nonelectrical effects into electrical signals</p> Signup and view all the answers

    What is the main purpose of a sensor?

    <p>To detect and respond to input from the physical environment</p> Signup and view all the answers

    Which of the following is an example of a passive sensor?

    <p>A thermistor changing its resistance when heated or cooled</p> Signup and view all the answers

    What type of signal does a digital sensor produce?

    <p>Binary</p> Signup and view all the answers

    Which sensor category requires an excitation signal for operation?

    <p>Active sensors</p> Signup and view all the answers

    What is the role of human skin in the context of sensors?

    <p>Detecting pressures and temperatures</p> Signup and view all the answers

    In what way do eyes function as sensors?

    <p>By detecting light energy</p> Signup and view all the answers

    Which principle of operation categorizes sensors into physical, chemical, and biological?

    <p>Principle of operation</p> Signup and view all the answers

    What type of sensor converts measured physical quantities using certain physical effects?

    <p>Physical sensor</p> Signup and view all the answers

    Which of the following is NOT a characteristic of passive sensors?

    <p>Incorporates active electronic components such as amplifier and IC</p> Signup and view all the answers

    What does an active sensor require for its operation?

    <p>Excitation signal</p> Signup and view all the answers

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