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mcq on photodiode

It can also be called a photodetector or photosensor. (A) Visible light 26. Avalanche Photodiode pni E • limited gain-bandwidth product • higher avalanche noise (c) Electron ionization rate is larger than hole ionization rate • large gain-bandwidth product • lower avalanche noise (a) p-i-n diode in high electric field (105V/cm) results in impact ionization. MCQ: In photodiode, when there is no incident light, thereverse current is almost negligible and is called. Compared to a photo-diode, which of the listed advantages and disadvantages would be expected of a phototransistor MCQs on Photodiode. quiz which has been attempted 1392 times by avid quiz takers. What is the reason phototransistor produces more current than a photodiode? (D) None of the above, Answer: (B) inversely proportional to the doping, Your email address will not be published. The presence of dark current decreases the sensitivity of the photodiode to light Q1: Photodiode is used in the detection of . December 5, 2020 December 4, 2020 rashmi. The maximum wavelength of photons that can be detected by a photodiode made by a semiconductor of bandgap 2eV is about Basic electronics Important Multiple choise question MCQ, Semiconductor diode important questions and answers that is very important for all examination, Here… Direction of electron flow. D. Mass of the two parallel plates. Q2: In using a photodiode as a photodetector, it is invariably reverse biased. (a) Visible light. Required fields are marked *. Power diode. The capacitance of a passive capacitance transducer depends on the following factors, except? [All India 2009 C] Ans.Zener diode, which is used as a DC voltage regulator. When the junction of the photodiode is illuminated, then the electric current starts flowing. C. PIN diode. (A) True (A) The power consumption is much reduced compared to reverse biased condition (B) Invisible light Determine photocurrent. TEDx Talks Recommended for … For the sake of your convenience, we even jotted the Solutions for NEET Physics MCQ Questions which you can cross-check during your practice. P N JUNCTION DIODE Multiple Choice Questions - 2 1. a) Avalanche photodiode b) p-n junction diode c) Zener diode d) Varactor diode View Answer . low resistance in Note: Reverse current flows through the photodiode when it is sensing light. Practice "Special Purpose Diodes" quiz, photodiode Multiple Choice Questions (MCQs) to practice electronic devices test with answers for online electrical engineering degree. Photodiode is used in the detection of Operation of Gunn diode is explained with. (c) No light. C. Relative dielectric constant. When a diodeis in reverse biased condition, there would be a reverse saturation current flowing through it from positive to the negative terminal of the diode. The colour of emitted light from LED depends on. Also explore over 113 similar quizzes in this category. Try this amazing MCQ Set 1 - Transistor Fundamentals quiz which has been attempted 1503 times by avid quiz takers. A pinoybix mcq, quiz and reviewers. The photodiode can be used as a photodetector to detect optical signals. Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. (A) A wider spectrum is accepted by the phototransistor than the photodiode Try this amazing Photodiode Quiz: How Much You Know? Traveling Wave Photodiode c. Resonant Cavity Photodiode d. All of the above. The photodiode; The LED; Answer – (2) 6. (b) Invisible light. Home » NEET Physics Objective Questions » 300+ TOP MCQs on Photodiode and Answers, NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. (B) Dark current MCQ on Pn Junction Diode The interface or the boundary between the p-type and n-type semiconductor is called PN junction. Answer: (C) The current produced by photons is amplified by the hfe of the transistor, 7. Hence for a certain range of reverse voltage acro… Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. Answer: (D) Both visible and invisible light The photodiode generates current when exposed to light. 37) Which photodiodes are crucially applicable to overcome the bandwidth-quantum efficiency trade-off along with its resemblence to the pyramid structure? (D) PIN current, 8. Your email address will not be published. The p-side has an excess of … (d) Both visible and invisible light. _____ has more sophisticated structure than p-i-n photodiode. MCQ in Industrial Electronics Part 10 of the series as Electronics Engineering topic in ECE Board Exam. Your email address will not be published. Topics provided are as per the NEET Physics Syllabus and covers both basic and advanced concepts. C.PIN diode Your Comments. The light is absorbed ……….with distance and is ………..to the absorption coefficient. Answer. Photodiode is used in the detection of (A) Visible light (B) Invisible light (C) No light (D) Both visible and invisible light. (D) Slower response and less sensitivity, Answer: (C) Slower response and greater sensitivity, 9. The value of this reverse saturation current does not depend on the applied reverse voltage across the diode rather it depends on the concentration of minority charge carriers in the semiconductor crystal. (C) 740 nm When a diode is forward biased, the recombination of free electron and holes produce EEE IQ 696,884 views. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. Solar cell is also known as large area photodiode because it converts solar energy or light energy into electric energy. –Photodiodes are designed to detect photons and can be used in circuits to sense light. Answer. MCQs on Photodiode : 1. If photons excite carriers in a reverse-biased pn junction, a very small current proportional to the light intensity flows. 3. 1. However, solar cell works only at bright light. 29:17. Number of available carriers C. Type of semiconductor material used D. Number of recombinations taking place (B) Only when the photodiode is reverse biased the incident photons produce electron-hole pairs (C) No light (C) Slower response and greater sensitivity A negative conductance microwave device; A high frequency rectifying device; A degenerate semiconductor device; A bulk negative differential conductance device; Answer – (1) 7. Zener current; dark current; photo current; PIN current Answer: (D) When photons are incident on the diode, the fractional change in the reverse current is much greater than the fractional change in the forward current. The power consumption is much reduced compared to reverse biased condition Mushroom Waveguide Photodiode b. (A) Heat (C) Photocurrent The Following Section consists Multiple Choice Questions on Diodes and Applications. (D) When photons are incident on the diode, the fractional change in the reverse current is much greater than the fractional change in the forward current. Q1: Photodiode is used in the detection of, Answer: (d) Both visible and invisible light, Q2: In using a photodiode as a photodetector, it is invariably reverse biased. Q5: Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. (C) Only if the diode is reverse biased light variations can be converted into current variations This set of Optical Communications Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Photodiodes With Internal Gain”. Q6. If a photodiode requires incident optical power of 0.70 A/W. a) 1.482 b) 2.457 c) 4.124 d) 3.199 View Answer. Important Mcq Questions !! A pinoybix mcq, quiz and reviewers. MORE MCQ ☰ More Mcq >Diode >Semiconductor ☰ More Q & A >Steam Engine >Steam Turbine >Steam Boiler >Thermal Power Plant >Nuclear Power Plant >Hydro Electric Power Plant >Laws of thermodynamics; Diode Multiple Choice Questions Answers; 26. A. NEET Physics Photodiode Multiple Choice Questions, 1. (C) The phototransistor can heavily doped than the photodiode (D) Both visible and invisible light, Answer: (D) Both visible and invisible light, 2. The width of the depletion region is Q3: The maximum wavelength of photons that can be detected by a photodiode made by a semiconductor of bandgap 2eV is about, Q4: The presence of dark current decreases the sensitivity of the photodiode to light. (B) Light 1. (B) Faster response and less sensitivity 6. So these NEET Physics MCQs and Answers for all Concepts as per the new syllabus. Answer: b Explanation: The Responsivity of photodiode is given by R = Ip/Po Ip = R*Po = 0.70*3.51*10-6 = 2.457μm. Distance between the two parallel plates. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Take the Quiz and improve your overall Engineering. (B) The current produced by photons is amplified by the hfe of the transistor b. (A) Proportional, exponentially, proportional Answer: (d) When photons are incident on the diode, the fractional change in the reverse current is much greater than the fractional change in the forward current. Light Emitting Diode or LED objective questions and answers. (B) 700 nm (D) 1240 nm, 4. (A) Directly proportional to the doping Diode and Application Electronics MCQs" is the set of frequently asked Multiple Choice questions and these MCQs are asked in different test in the past in different test. Sanfoundry Global Education & Learning Series – Optical Communications. Required fields are marked *, How to Score 170 Plus in NEET Physics 2020, Last Minute Preparation Tips for NEET Physics. The arrow direction in the diode symbol indicates a. D. Photodiode. Faster than a calculator | Arthur Benjamin | TEDxOxford - Duration: 15:04. D. Signal diode View Answer. A pn-junction diode emits light by spontaneous emission (a) LED (b) APD (c) PIN diode (d) Zener diode. 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