If photons excite carriers in a reverse-biased pn junction, a very small current proportional to the light 3. If you are looking for a reviewer in Electronics Engineering this will definitely help you before taking the Board Exam. Find the distance in yards to an object if the display of a radar signal measures 4.4 microseconds. Construction of LED, that is physical dimensions B. d. 656 The opaque coating used in signal and rectifier diodes is absent in photo diodes. The Following Section consists Multiple Choice Questions on Diodes and Applications. This set of multiple-choice questions includes the collection of solved MCQ on the Routing algorithm in computer networks. Note: Reverse current flows through the photodiode when it is sensing light. give reason The colour of emitted light from LED depends on. 328 . 380 . This article explains What is a Photodiode, How it works and how to use them in a circuit. Number of available carriers C. Type of semiconductor material used D. Number of recombinations taking place 1. Photodiodes are constructed like any other conventional junction diodes. In addition to reading the questions and answers on my site, I would suggest you to check the following, on amazon, as well: a) the antigens are detected using the neutralization assay b) the antigen combines with its soluble antibody and form a lattice and develops a visible precipitate –Phototransistors are photodiodes with some internal amplification. c. 722 . Multiple Choice Questions and Answers on Semiconductor Diode. A typical photo diode is shown below. Here you will find multiple-choice questions on alternate and adaptive routing algorithms, Enhanced Interior Gateway Routing Protocol(EIGRP), unicast routing, OSPF, BGP and EIGRP along with the example of a link-state routing protocol. Light Emitting Diode or LED objective questions and answers. a. This test is based on the principle where? Take the Quiz and improve your overall Engineering. Photodiodes are one of the popular components used to sense incident light in electronic circuits. A photodiode is a PN-junction diode that consumes light energy to produce an electric current. b. Sometimes it is also called a photo-detector, a light detector, and photo-sensor. Multiple Choice Questions and Answers By Sasmita January 9, 2020. This is the Multiple Choice Questions (MCQs) in Chapter 20: How Diodes Are Used from the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco. –Photodiodes are designed to detect photons and can be used in circuits to sense light. when used as a detector of optical signals is operated under reverse bias. Start Practice Exam Test Questions. When light is incident on a Photodiode, the electrons and holes are separated and will allow the junction to conduct. It has wide range of applications like Remote control, alarms, sensory applications and so on. A. 26. 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