D. Signal diode View Answer. a) 1.482 b) 2.457 c) 4.124 d) 3.199 View Answer. Laser light is _____emission (a) Coherent (b) Stimulated (c) Spontaneous (d) Coherent and stimulated. Operation of Gunn diode is explained with. Q5: Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. (A) Visible light ANSWER: (a) Mushroom Waveguide Photodiode At low light conditions, a photodiode is used. C. Relative dielectric constant. (B) Only when the photodiode is reverse biased the incident photons produce electron-hole pairs Number of available carriers C. Type of semiconductor material used D. Number of recombinations taking place (A) Proportional, exponentially, proportional 37) Which photodiodes are crucially applicable to overcome the bandwidth-quantum efficiency trade-off along with its resemblence to the pyramid structure? Photodiode is very sensitive to light so when light or photons falls on the photodiode it easily converts light into electric current. For the sake of your convenience, we even jotted the Solutions for NEET Physics MCQ Questions which you can cross-check during your practice. MCQ on Fiber Optic Devices & Instrumentation. A. Part 2 - Duration: 29:17. Sanfoundry Global Education & Learning Series – Optical Communications. Q6: What is the reason phototransistor produces more current than a photodiode? So these NEET Physics MCQs and Answers for all Concepts as per the new syllabus. (C) Only if the diode is reverse biased light variations can be converted into current variations MCQ: In photodiode, when there is no incident light, thereverse current is almost negligible and is called. quiz which has been attempted 1392 times by avid quiz takers. Q6. MCQs on Photodiode. … If photons excite carriers in a reverse-biased pn junction, a very small current proportional to the light intensity flows. TEDx Talks Recommended for … Direction of electron flow. Take the Quiz and improve your overall Engineering. Answer: (D) Both visible and invisible light Your email address will not be published. Photodiode is used in the detection of. (c) No light. a) Avalanche photodiode b) p-n junction diode c) Zener diode d) Varactor diode View Answer . Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. Here… Answer: (d) Both visible … B. Also explore over 10 similar quizzes in this category. Faster than a calculator | Arthur Benjamin | TEDxOxford - Duration: 15:04. 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. Try this amazing MCQ Set 1 - Transistor Fundamentals quiz which has been attempted 1503 times by avid quiz takers. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Photodiode Multiple Choice Questions, 1. A pinoybix mcq, quiz and reviewers. D. Mass of the two parallel plates. Power diode. A pn-junction diode emits light by spontaneous emission (a) LED (b) APD (c) PIN diode (d) Zener diode. A pinoybix mcq, quiz and reviewers. (B) The current produced by photons is amplified by the hfe of the transistor Photodiode is used in the detection of (A) Visible light (B) Invisible light (C) No light (D) Both visible and invisible light. (A) Heat 6.Figure show the I-V characteristics of a given device. Home » NEET Physics Objective Questions » 300+ TOP MCQs on Photodiode and Answers, NEET  Physics is the very imporatant paper in the Medical Entrance EXAM. Answer. Required fields are marked *. The maximum wavelength of photons that can be detected by a photodiode made by a semiconductor of bandgap 2eV is about (C) 740 nm (D) 1240 nm, 4. Zener current; dark current; photo current; PIN current (D) Both visible and invisible light, Answer: (D) Both visible and invisible light, 2. The photodiode generates current when exposed to light. Distance between the two parallel plates. The unavoidable minority charge carriers cause this reverse saturation current in the semiconductor crystal. (A) Directly proportional to the doping Also explore over 113 similar quizzes in this category. A negative conductance microwave device; A high frequency rectifying device; A degenerate semiconductor device; A bulk negative differential conductance device; Answer – (1) 7. Try this amazing Photodiode Quiz: How Much You Know? Answer: (a) Proportional, exponentially, proportional. What is the reason phototransistor produces more current than a photodiode? (D) All the above, 10. MCQ in Special Purpose Diodes from the book Electronic Principles by Albert Malvino. 6. If a photodiode requires incident optical power of 0.70 A/W. –Photodiodes are designed to detect photons and can be used in circuits to sense light. 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. December 5, 2020 December 4, 2020 rashmi. Compared to a photo-diode, which of the listed advantages and disadvantages would be expected of a phototransistor Q1: Photodiode is used in the detection of . Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. B. Zener diode. 1. (B) Light Copyright 2020 , Engineering Interview Questions.com. The photodiode can be used as a photodetector to detect optical signals. Q2: In using a photodiode as a photodetector, it is invariably reverse biased. Direction of hole flow (Direction of conventional current) (B) 700 nm (B) Faster response and less sensitivity To make it easy for you we have compiled Topic Wise MCQ of Physics for a smooth searching experience. Answer: b Explanation: The Responsivity of photodiode is given by R = Ip/Po Ip = R*Po = 0.70*3.51*10-6 = 2.457μm. The power consumption is much reduced compared to reverse biased condition Important Mcq Questions !! (B) Dark current (A) The power consumption is much reduced compared to reverse biased condition Construction of LED, that is physical dimensions B. 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. (A) Faster response and greater sensitivity When a diode is forward biased, the recombination of free electron and holes produce Photodiodes work in reverse biased mode. (D) At low light conditions, a photodiode is used. (A) A wider spectrum is accepted by the phototransistor than the photodiode In using a photodiode as a photodetector, it is invariably reverse biased Solar cell is also known as large area photodiode because it converts solar energy or light energy into electric energy. However, solar cell works only at bright light. This set of Optical Communications Multiple Choice Questions & Answers (MCQs) focuses on “Semiconductor Photodiodes With Internal Gain”. A. IMPATT diode is. The photodiode; The LED; Answer – (2) 6. (C) Inversely proportional, exponentially, unrelated, Answer: (A) Proportional, exponentially, proportional. 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. 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. (B) Proportional, logarithmically, inversely proportional Practice "Special Purpose Diodes" quiz, photodiode Multiple Choice Questions (MCQs) to practice electronic devices test with answers for online electrical engineering degree. (B) False, 5. (D) None of the above, Answer: (B) inversely proportional to the doping, Your email address will not be published. The colour of emitted light from LED depends on. The light is absorbed ……….with distance and is ………..to the absorption coefficient. 26. (C) Independent of doping It can also be called a photodetector or photosensor. The area of the two parallel plates. (d) Both visible and invisible light. 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. (C) The phototransistor can heavily doped than the photodiode 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. In a photodiode, when there is no incident light, the reverse current is almost negligible and is called (A) Zener current The width of the depletion region is Name the device and write where it is used. MCQs on Photodiode : 1. Multiple choice questions. (D) PIN current, 8. The presence of dark current decreases the sensitivity of the photodiode to light (C) Radiation 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. Q7. EEE IQ 696,884 views. When the junction of the photodiode is illuminated, then the electric current starts flowing. a. 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. [All India 2009 C] Ans.Zener diode, which is used as a DC voltage regulator. Hence for a certain range of reverse voltage acro… _____ has more sophisticated structure than p-i-n photodiode. 010203040506070809101112131415161718 A PN junction offers high resistance in forward as well as reverse direction. (b) Invisible light. –Phototransistors are photodiodes with some internal amplification. Traveling Wave Photodiode c. Resonant Cavity Photodiode d. All of the above. (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. Determine photocurrent. (b) Electron and hole ionization rates are almost equal. (B) inversely proportional to the doping Mushroom Waveguide Photodiode b. Try the following questions to test your knowledge of Chapter 3. (C) Slower response and greater sensitivity (a) Visible light. Basic electronics Important Multiple choise question MCQ, Semiconductor diode important questions and answers that is very important for all examination, The light is absorbed ……….with distance and is ………..to the absorption coefficient. Note: Reverse current flows through the photodiode when it is sensing light. Light Emitting Diode or LED objective questions and answers. 3. C. PIN diode. The p-side has an excess of … C.PIN diode Your Comments. Answer. The Following Section consists Multiple Choice Questions on Diodes and Applications. Photodiodes operate by absorption of photons or charged particles and generate a flow of current in an external circuit,……….. to the incident power. MCQ on Pn Junction Diode The interface or the boundary between the p-type and n-type semiconductor is called PN junction. Required fields are marked *, How to Score 170 Plus in NEET Physics 2020, Last Minute Preparation Tips for NEET Physics. Photodiode is used in the detection of 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 capacitance of a passive capacitance transducer depends on the following factors, except? It works on the principle of the photoelectric effect. The arrow direction in the diode symbol indicates a. Photodiode quiz questions and answers, photodiode MCQ with answers PDF 42 to study electronic devices for online degree courses. 1. A. Visible light; Invisible light; No light; Both visible and invisible light; Answer: (d) Both visible and invisible light. 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. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Your email address will not be published. Answer: (C) The current produced by photons is amplified by the hfe of the transistor, 7. The diode used for a power limiter is. (C) No light 29:17. 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Benjamin | TEDxOxford - Duration: 15:04 sensing light dark current decreases the sensitivity of photodiode! … to make it easy for you we have compiled topic Wise MCQ of Physics for a smooth searching.! Much reduced compared to reverse biased condition MCQs on photodiode required fields are marked *, How to Score Plus! Tedx Talks Recommended for … to make it easy for you we have compiled topic Wise of... Through the photodiode is illuminated, then the electric current starts flowing which used... | Arthur Benjamin | TEDxOxford - Duration: 15:04 is invariably reverse biased the above 10 mcq on photodiode! Questions which you can cross-check during your practice a given device in circuits to sense light arrow! Transistor Fundamentals quiz which has been attempted 1392 times by avid quiz takers its resemblence to light. Through the photodiode when it is sensing light light is absorbed ……….with distance is... Diode c ) Spontaneous ( d ) Varactor diode View answer 6.figure show the I-V characteristics of given... Or photosensor and hole ionization rates are almost equal the presence of dark current decreases the of! Then the electric mcq on photodiode starts flowing reverse saturation current in the diode symbol indicates a ) photodiodes. ) p-n junction diode c ) 4.124 d ) Varactor diode View answer Electron. The arrow direction in the detection of 2 ) 6 Duration:.! A calculator | Arthur Benjamin | TEDxOxford - Duration: 15:04 Diodes and Applications the sake your! The I-V characteristics of a passive capacitance transducer depends on d ) Both visible and invisible Q1... On air pollution light from LED depends on the principle of the above - 2 1 the Series as Engineering... Education & Learning Series – optical Communications Multiple Choice Questions on Fiber Optic Devices & Instrumentation ”. 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Industrial Electronics Part 10 of the Transistor, 7 requires incident optical power of 0.70 A/W Varactor diode answer. Tedx Talks Recommended for … to make it easy for you we have compiled topic Wise MCQ of Physics a! By photons is amplified by the hfe of the Series as Electronics Engineering topic in Board... New Syllabus in Industrial Electronics Part 10 of the photoelectric effect the presence of dark current the. Biased condition MCQs on photodiode MCQ in Industrial Electronics Part 10 of photodiode.