SiTek - the company SiTek Electro Optics designs, manufactures and sells state-of-the-art position sensing detectors (PSDs) of the highest value and quality, with the focus on the customer. Dark Current Noise B. Quantum Noise C. Surface Leakage Current noise D. All of the above. Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. Which of the following is not covered under Mechanical energy domain? Never overheats. 17. current/voltage characteristics is shown in the following figure: (a) Photovoltaic Operation -Rl>>Rd, load line (b) Zero Bias Operation -Rl<> Category >> Electronic Engineering (MCQ) questions & answers >> Two-Port Network Parameters 1) Which among the following represents the precise condition of reciprocity for transmission parameters? Optical sensors are integral parts of many common devices, including computers, copy machines (xerox) and light fixtures that turn on automatically in the dark. 18-Inductive proximity sensors can be effective only when the objects are of _____ materials. Proximity Sensor Features. The current sensors in Google’s connected home devices and services generally fall into the following categories: Cameras that record video footage and still images and detect what’s happening in the home. ANSWER: D. All of these . Lowest. Optical: Wave, wave velocity, refractive index, reflectivity, ... X. UV Sensors. Photodiodes and photo transistors are a few examples of photo detectors. TMD4903 : Color, ALS, and proximity sensor module with mobeam™ and universal remote control. The transmissive sensor is used in most applications for small distances and narrow objects. 11-The following is (are) type(s) of Hall Effect sensors. Multiple choice questions. c. the ratio of output current to … The detectors used in optical sensors is - Published on 16 Sep 15. a. Photo diode. This article discusses the types of flame detectors on the market. The reflex sensor, however, is used for a wide range of distances as well as for materials and objects of different shapes. The photodetector is as essential an element of any fiber optic system as the optical fiber or the light source. Application of Optical Sensors Document Number: 81449 Rev. For optical sensors to work effectively, they must be the correct type for the application, so that they maintain their sensitivity to the property they measure. Acts as a fixed resistance. The sensor acts as a variable resistance that will change status : the resistance increases when the sensor is wet and the resistance is lower when the sensor is dry. 39. The communication can be … Optical sensors use visible or ultraviolet light to interrogate sensors for analysis. The McQ OWL ® technology combines wireless communications, advanced image processing, automated activity detection, and IP connectivity to bring you live video on a map based Situation Awareness Display (SAD). To see this page as it is meant to appear, please enable your Javascript! Theme images by, Electronics MCQ - Electronic Instrumentation. 1) Unstable 2) Stable 3) Condit... Light Sensors_1 Objective Questions: Ques 1. MCQ in Fiber Optics Communications Part 1 as part of the Communications Engineering (EST) Board Exam. Which of the following is correct for tactile sensors . D.C. power into A.C.... Control System_1 Objective Questions: Que 1. Required fields are marked *. Transient response analysis is done for_________ systems. Sensors are sophisticated devices that are frequently used to detect and respond to electrical or optical signals. into a signal which can be measured electrically. A. Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. Your email address will not be published. Optical Combiner b. Optical Splitter c. Optical Coupler d. None of the above. Save my name, email, and website in this browser for the next time I comment. Voltage 3. b. the ratio of the diode output current to optical input power. To practice all areas of Analytical Instrumentation, here is complete set of 1000+ Multiple Choice Questions and Answers . Home >> Category >> Electrical Engineering (MCQ) questions and answers >> Electrical and Electronic Measurements & Instrumentation; Q. 10, 8020 Graz, Austria - D. Has a constant current passing through it View Answer . Microphones that record audio and can detect specific sounds or motion nearby. 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