Exam 086022rr Electronic Sensorswhen You Have Completed Your Exam A Review your answers carefully upon completing your exam. Ensure you have answered all questions before clicking Submit Exam, as answers are not recorded until then. If you need to exit early, click Cancel Exam. Questions 1 to 20 require selecting the best answer for each, with attention to questions that may be split across pages. Focus on understanding the core concepts related to electronic sensors, transducers, and related components as reflected in the questions.
Paper For Above instruction Electronic sensors play a vital role in modern automation and measurement systems, providing critical data for control and monitoring applications. The exam covers fundamental principles, components, and functions of various electronic sensors and devices, ranging from voltage-to-resistance converters to electromagnetic transducers. Question 1: A Variable Differential Resistor (VDR) converts changes in voltage to changes in resistance. This device is vital in sensing applications where voltage variations are used to infer resistance changes caused by environmental factors. VDRs are often used in parameters such as temperature or displacement monitoring, translating electrical signals into measurable resistance changes (Miller, 2000). Question 2: Hall-effect devices are most likely used in clamp-type ammeters. These sensors detect magnetic fields generated by current-carrying conductors. A Hall-effect sensor measures magnetic flux and converts it into an electrical signal, making it suitable for non-intrusive current measurements (Popovic, 2004). Question 3: Thermistors are resistors whose resistance varies with temperature. They are nonlinear resistors that respond quickly to temperature changes. Negative temperature coefficient (NTC) thermistors are common and used for temperature measurement and compensation because their resistance decreases as temperature increases (Kushner et al., 2012). Question 4: In a carbon microphone, the carbon button acts like a variable resistor. Variations in sound pressure cause