Basic electronics Important Multiple choise question MCQ, Semiconductor diode important questions and answers that is very important for all examination, Home » NEET Physics Objective Questions » 300+ TOP MCQs on Photodiode and Answers, NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. 37) Which photodiodes are crucially applicable to overcome the bandwidth-quantum efficiency trade-off along with its resemblence to the pyramid structure? 010203040506070809101112131415161718 A PN junction offers high resistance in forward as well as reverse direction. (A) 620 nm Q5: Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. Answer. Direction of electron flow. 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. MCQs on Photodiode : 1. Required fields are marked *, How to Score 170 Plus in NEET Physics 2020, Last Minute Preparation Tips for NEET Physics. A. 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. MCQ on Fiber Optic Devices & Instrumentation. The presence of dark current decreases the sensitivity of the photodiode to light To make it easy for you we have compiled Topic Wise MCQ of Physics for a smooth searching experience. (C) Only if the diode is reverse biased light variations can be converted into current variations Direction of hole flow (Direction of conventional current) Multiple choice questions. The area of the two parallel plates. 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. … (A) The power consumption is much reduced compared to reverse biased condition The arrow direction in the diode symbol indicates a. (d) Both visible and invisible light. (B) Faster response and less sensitivity (A) Heat Light Emitting Diode or LED objective questions and answers. Q6: What is the reason phototransistor produces more current than a photodiode? The p-side has an excess of … Take the Quiz and improve your overall Engineering. –Photodiodes are designed to detect photons and can be used in circuits to sense light. Multiple Choice Questions on Fiber Optic Devices & Instrumentation . 6.Figure show the I-V characteristics of a given device. Copyright 2020 , Engineering Interview Questions.com. Q1: Photodiode is used in the detection of . B. Zener diode. (A) Zener current Photodiode is very sensitive to light so when light or photons falls on the photodiode it easily converts light into electric current. 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) Visible light. However, solar cell works only at bright light. Practice "Special Purpose Diodes" quiz, photodiode Multiple Choice Questions (MCQs) to practice electronic devices test with answers for online electrical engineering degree. (D) At low light conditions, a photodiode is used. (B) Invisible light D. Signal diode View Answer. Name the device and write where it is used. (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. Important Mcq Questions !! In using a photodiode as a photodetector, it is invariably reverse biased Required fields are marked *. (D) None of the above, Answer: (B) inversely proportional to the doping, Your email address will not be published. (B) Proportional, logarithmically, inversely proportional A pn-junction diode emits light by spontaneous emission (a) LED (b) APD (c) PIN diode (d) Zener diode. C. PIN diode. If a photodiode requires incident optical power of 0.70 A/W. Faster than a calculator | Arthur Benjamin | TEDxOxford - Duration: 15:04. (c) No light. (A) A wider spectrum is accepted by the phototransistor than the photodiode It can also be called a photodetector or photosensor. At low light conditions, a photodiode is used. Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. (C) No light Also explore over 113 similar quizzes in this category. Hence for a certain range of reverse voltage acro… (B) 700 nm (A) Visible light The unavoidable minority charge carriers cause this reverse saturation current in the semiconductor crystal. Photodiode quiz questions and answers, photodiode MCQ with answers PDF 42 to study electronic devices for online degree courses. 1. P N JUNCTION DIODE Multiple Choice Questions - 2 1. (B) Only when the photodiode is reverse biased the incident photons produce electron-hole pairs C. Relative dielectric constant. Photodiode is used in the detection of. MCQ in Special Purpose Diodes from the book Electronic Principles by Albert Malvino. A. MCQ: In photodiode, when there is no incident light, thereverse current is almost negligible and is called. What is the reason phototransistor produces more current than a photodiode? MCQ on Pn Junction Diode The interface or the boundary between the p-type and n-type semiconductor is called PN junction. Operation of Gunn diode is explained with. The Following Section consists Multiple Choice Questions on Diodes and Applications. A pinoybix mcq, quiz and reviewers. Your email address will not be published. The width of the depletion region is (b) Invisible light. Q6. The light is absorbed ……….with distance and is ………..to the absorption coefficient. B. _____ has more sophisticated structure than p-i-n photodiode. (C) Photocurrent 1. Q7. (C) Radiation December 5, 2020 December 4, 2020 rashmi. Also explore over 10 similar quizzes in this category. (C) Independent of doping Answer: (C) The current produced by photons is amplified by the hfe of the transistor, 7. Sanfoundry Global Education & Learning Series – Optical Communications. Try this amazing Photodiode Quiz: How Much You Know? (B) Dark current Answer. Q2: In using a photodiode as a photodetector, it is invariably reverse biased. The diode used for a power limiter is. The power consumption is much reduced compared to reverse biased condition Here… Construction of LED, that is physical dimensions B. Laser light is _____emission (a) Coherent (b) Stimulated (c) Spontaneous (d) Coherent and stimulated. Practice daily with these NEET Physics objective questions on air pollution . (C) The phototransistor can heavily doped than the photodiode A pinoybix mcq, quiz and reviewers. a) 1.482 b) 2.457 c) 4.124 d) 3.199 View Answer. 26. Number of available carriers C. Type of semiconductor material used D. Number of recombinations taking place (D) 1240 nm, 4. 5.State the relation between the frequency v of radiation emitted by LED and the band gap energy E, of the semiconductor used to fabricate it. 29:17. Try this amazing MCQ Set 1 - Transistor Fundamentals quiz which has been attempted 1503 times by avid quiz takers. [All India 2009 C] Ans.Zener diode, which is used as a DC voltage regulator. 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. A. 3. 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. (B) inversely proportional to the doping –Phototransistors are photodiodes with some internal amplification. (A) True EEE IQ 696,884 views. The colour of emitted light from LED depends on. (B) The current produced by photons is amplified by the hfe of the transistor Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. (D) All the above, 10. Distance between the two parallel plates. Note: Reverse current flows through the photodiode when it is sensing light. Try the following questions to test your knowledge of Chapter 3. 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. Visible light; Invisible light; No light; Both visible and invisible light; Answer: (d) Both visible and invisible light. MCQ in Industrial Electronics Part 10 of the series as Electronics Engineering topic in ECE Board Exam. Answer: (c) The current produced by photons is amplified by the hfe of the transistor, Q7: In a photodiode, when there is no incident light, the reverse current is almost negligible and is called, Q8: Compared to a photo-diode, which of the listed advantages and disadvantages would be expected of a phototransistor, Answer: (c) Slower response and greater sensitivity, Q9: When a diode is forward biased, the recombination of free electron and holes produce, Q10: The width of the depletion region is, Answer: (b) inversely proportional to the doping, Your email address will not be published. The photodiode generates current when exposed to light. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. (b) Electron and hole ionization rates are almost equal. It works on the principle of the photoelectric effect. D. Photodiode. In a photodiode, when there is no incident light, the reverse current is almost negligible and is called When the junction of the photodiode is illuminated, then the electric current starts flowing. Your email address will not be published. Photodiode is used in the detection of (A) Visible light (B) Invisible light (C) No light (D) Both visible and invisible light. quiz which has been attempted 1392 times by avid quiz takers. b. a) Avalanche photodiode b) p-n junction diode c) Zener diode d) Varactor diode View Answer . 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. Traveling Wave Photodiode c. Resonant Cavity Photodiode d. All of the above. a. (D) Both visible and invisible light, Answer: (D) Both visible and invisible light, 2. Compared to a photo-diode, which of the listed advantages and disadvantages would be expected of a phototransistor Topics provided are as per the NEET Physics Syllabus and covers both basic and advanced concepts. This set of Optical Communications Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Photodiodes With Internal Gain”. Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. A negative conductance microwave device; A high frequency rectifying device; A degenerate semiconductor device; A bulk negative differential conductance device; Answer – (1) 7. The photodiode can be used as a photodetector to detect optical signals. 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(D) PIN current, 8. (A) Proportional, exponentially, proportional Power diode. Mushroom Waveguide Photodiode b. MCQs on Photodiode. Determine photocurrent. The capacitance of a passive capacitance transducer depends on the following factors, except? C.PIN diode Your Comments. Solar cell is also known as large area photodiode because it converts solar energy or light energy into electric energy. Part 2 - Duration: 29:17. When a diode is forward biased, the recombination of free electron and holes produce Photodiode is used in the detection of TEDx Talks Recommended for … Answer: (d) Both visible … IMPATT diode is. The light is absorbed ……….with distance and is ………..to the absorption coefficient. 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. Photodiodes work in reverse biased mode. (B) False, 5. 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Is invariably reverse biased condition mcq on photodiode on photodiode | Arthur Benjamin | TEDxOxford Duration! Current in the diode symbol indicates a light is absorbed ……….with distance mcq on photodiode is ……….. to absorption... Traveling Wave photodiode c. Resonant Cavity photodiode d. All of the above, the. Mcqs and Answers which has been attempted 1392 times by avid quiz takers works on the principle of the,! Given device on Diodes and Applications ) 2.457 c ) 4.124 d ) Varactor diode View answer biased MCQs. Set 1 - Transistor Fundamentals quiz which has been attempted 1503 times by avid quiz.! All India 2009 c ] Ans.Zener diode, which is used in the symbol!