Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. A closed loop … Photodetectors can dictate the performance of a fiber optic communication link. (2019, July 25). Top 10 MCQ Questions on Sensors, and practical applications of different types of sensors. Basic Electronics Objective Questions: Que 1. The main classes are Photo resistors, photo voltaic and photo emitters. Mechanical device can act as a primary transducer. It is the ability of the sensor to indicate the same output over a period of time for a constant input. Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. Proximity sensor simply means; A sensor that detects, captures, and relays information without any physical contact! TMD4903 : Color, ALS, and proximity sensor module with mobeam™ and universal remote control. In the above given example of thermocouple. See all products . Contact Us. a) Linear Hall Effect sensor b) ... © 2017-2020 Electronics and Networking Blog. 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. Q8. Counters c. Both a and b d. None of the above . 2. into a signal which can be measured electrically. Sensors are sophisticated devices that are frequently used to detect and respond to electrical or optical signals. If it detect reflective surface it goes high.Based on the TCRT5000 these sensors consist of a pair of reflective sensors which include an infrared emitter and phototransistor. While infrared detector acts as receiver as it responds to infrared emission. Light-to-Frequency (LTF) sensors convert measurements of light intensity to a digital form for direct interfacing to a microcontroller. A measurement system consists of sensors, actuators, transducers and signal processing devices. To further understand what proximity sensor is all about, we’ll take a look at its features. The laser sensor can be used as a distance-measuring tool to detect the distance from it to obstacles. ANSWER: (c) Optical Coupler. When a PN Junction is formed, diffusion current causes 1) mixing of current carriers 2) ... Control System_2 Objective Questions: Que 1. These latest sensors include medical sensors, GPS, inertial measurement unit (IMU) and optical sensors. Sensors are also integrated into various accessories such as cloths, wrist bands, eyeglasses, headphones and smartphones. The communication can be … The term responsivity as it applies to a light detector is best described as. 31) Which among the following characteristics of Laser light specifies the precise movement of all individual light waves together through time and space? The p-region and n-region… 3-in-1 small aperture color light sensor, proximity sensor and IR LED in an optical module 1.8V I²C. Shift Registers b. 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