Microphones that record audio and can detect specific sounds or motion nearby. 16. A closed loop … B. :: What Is an Photodetector? Light sensors or Photo Sensors can be classed into three types based on the physical quantity that is affected. It consists of two modules, a rain board that detects the rain and a control module, which compares the analog value, and converts it to a digital value.The raindrop sensors can be used in the automobile sector to control the windshield wipers automatically, in the agriculture sector to sense rain and it is also used in home automation systems. The anode of the LED is connected to the power line VCC via resistor RE and the cathode is grounded. ... Electronic Bridges   If the electrical components are arranged in the form a bridge or ring structure, then such electrical circuit is call... Light Sensors_2 Objective Questions: Ques 1. I have a machine failing optical detector constantly and intermittently failing TMP low soft. Optical sensors measure changes to the amount of light shining on the sensor. Following acts as detector in Optical sensor. The Boolean experssion Y=AB + CD represents 1) Two ORs ANDed together 2) A 4 input ... Home | Shift Registers b. PROCEDURE ENABLING SIMULATION AND IN-DEPTH ANALYSIS OF OPTICAL EFFECTS IN CAMERA-BASED TIME-OF-FLIGHT SENSORS M. Baumgart 1, *, N. Druml 2, C. Consani 1 1 CTR Carinthian Tech Research AG, Europastr. It is sensitive to LPG, Hydrogen, Smoke, Methane, Propane, Alcohol, Butane and other industrial combustible gases. For this test, we recommend using a single-color matte surface for optical mice and either a matte or glossy dark surface for laser mice. A measurement system consists of sensors, actuators, transducers and signal processing devices. Ultraviolet Light Detector; Photo Stability Sensors; UV Photo Tubes; Germicidal UV Detectors ; All the sensors can be classified into two types based on the power or signal requirement. Prepare Now for free! Optical: Wave, wave velocity, refractive index, reflectivity, ... X. UV Sensors. The laser sensor can be used as a distance-measuring tool to detect the distance from it to obstacles. Never overheats. Read more » Coming exhibitions See our products at following exhibitions. An optical detector is a device that converts light signals into electrical signals, which can then be amplified and processed. In Zener diode, the breakdown is due to Zener, has doping. b. the ratio of the diode output current to optical input power. Light-to-Frequency. Question:22. To further understand what proximity sensor is all about, we’ll take a look at its features. The sensor used in this project is MQ-2 Gas/Smoke sensor. 31) Which among the following characteristics of Laser light specifies the precise movement of all individual light waves together through time and space? When an intruder enters the room where Pyroelectric sensor or detector is mounted, it responds to change in light due to presence of intruder. Which among the following controls the length of Fabry-Perot interferometer so that it can act as a tunable optical filter? 21) What is secondary transducer? Home >> Category >> Electrical Engineering (MCQ) questions and answers >> Electrical and Electronic Measurements & Instrumentation; Q. Contains latest information on sensors as well. 3-The sensors are classified on the basis of. Optical sensors can be represented in general terms as a wavelength-selectable light source, the sensor material itself interacting with analytes, and a light detector (Fig. Which detectors are used in optical sensors? into a signal which can be measured electrically. Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. Contact Us. Moderate. Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. Scintillation detector is a combination of scintillator and photo multiplier tube. Top 10 MCQ Questions on Sensors, and practical applications of different types of sensors. b. the ratio of the diode output current to optical input power. The white side of the Do not wipe the lens or the sensor as this can also cause tracking issues. The following is (are) type(s) of Hall Effect sensors. Your email address will not be published. A. Transducer B. Tachometer C. Multimeter D. Phase-meter. Answer Explanation ANSWER: Both a and b. Two-Port Network Parameters - Electronic Engineering (MCQ) questions & answers Home >> Category >> Electronic Engineering (MCQ) questions & answers >> Two-Port Network Parameters 1) Which among the following represents the precise condition of reciprocity for transmission parameters? Counters c. Both a and b d. None of the above . B. Nest Learning Thermostat (1st and 2nd generation) Detect movement of the ring for manual thermostat control. There is a p-region an intrinsic region and an n-region. ... To detect motion on both sides of zero, a fairly involved phase- sensitive demodulator would be required. Proximity Sensor Features. 7-It is the ability of the sensor to indicate the same output over a period of time for a constant input. A. Charged-particle-beam optical systems including beam tube exhibiting reduced eddy currents: December, 2001: Nakano: 20090039295: DETACHABLE INNER SHIELD: February, 2009: Yu et al. A. Try the following questions to test your knowledge of Chapter 3. 15. The thermocouple acts as a transducer but the additional circuits or components needed like the voltmeter, a display etc together from a temperature sensor.. Which of the following is not a characteristic of the immobilized enzymes? a) They cannot be re-used b) It produces reproducible results c) Stability exists d) Same catalytic activity is present for number of analysis Answer: a Explanation: Immobilized enzymes can be reused. PIN Diode PIN photodiode is a kind of photo detector, it can convert optical signals into electrical signals. Q8. C. High. About Us | Which of the following is correct for tactile sensors . Optical heterodyne detection is a method of extracting information encoded as modulation of the phase, frequency or both of electromagnetic radiation in the wavelength band of visible or infrared light. Random Nerd Tutorial The comparator has 2 outputs connected to the rain sensor, a digital output ( 0/1 ) and an analog output ( 0 to 1023 ). c. the ratio of output current to … 5-The following main dynamic characteristic(s) is usually considered in Mechatronics application of sensors. Following acts as detector in Optical sensor . It consists of a shaft connected to a circular disc, containing one or more tracks of alternating transparent and opaque areas. Proximity sensor simply means; A sensor that detects, captures, and relays information without any physical contact! Resistance temperature detectors B. Thermistors C. Ultrasonic D. All of these View Answer / Hide Answer. : The McQ RANGER ® is a low cost sensor system using seismic, acoustic and magnetic to detect people, vehicles and aircraft. This facilitates coupling the LED light with an optical device. Photo resistors change their electrical properties when illuminated. Hence the transducer will just convert the energy from one form to another and all the remaining work is done by the additional … The following is its features, with some uniquely seen as compared to traditional optical/contact sensors: Same output over a period of time for a constant current passing through View. 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