de Broglie 9. Chapter-wise Short Questions & Answers in Basic Electronics You will find lots of questions and answers in each chapter. LEDs are comprised of 3 main components: the LED’s (the chip set that produces light), the driver (converts AC to DC) and the heat sink (to keep everything cool). A typical output of a solar cell is . Semiconductor Material name that shows the optical property 4. • What transformer do I need for the 12V rated LED lamps? 7. Be prepared with examples of your work 7. These questions are very useful as college viva questions also. Watu.noAlertUnanswered = 1; 13. Depletion potential There is given Cloud Computing interview questions and answers that has been asked in many companies. This value of the potential is known as the stoping potential and by this way, you can analyze the stoping potential for each color LED. Practice your answers to common interview questions 3. Semiconductor Electronics Important Questions for CBSE Class 12 Physics Semiconductor, Diode and its Application. Q.3 What is ASCII code? It is a substance with conduction properties between metals and insulators. These electrons can be attracted by the anode in a circuit and as a result of a current, you can observe with respect to the incident radiations (color). Here is a list of 65+ common questions and answers regarding the thyroid. hall petch equation constants, Plank’s constant page in pdf format, Click here: apniphysics_com_viva_viva_questions_plancks_constant. Multiple Choice Questions and Answers on Optical Fiber Communication(Part-1).Objective Questions and Answers on Optical Fiber Communication . But at a certain value of the potential, it appears. 15. Interfacing stepper motor and temperature sensor. Read all instructions and manuals before using a LED bulb outdoors. Number of available carriers C. Type of semiconductor material used D. Number of recombinations taking place What is the order of energy gap in a pure semiconductor ? Watu.post_id = 382; Solar Cell Multiple Choice Questions and Answers. What is the green color wavelength range? 11. _____ Viva help for Optics Experiments The LED works in the forward bias or the reverse bias? The voltage at which the zener diode breaks down is called the zener voltage. 3. In semiconductor diode (as per V-I Characteristics) the current doesn’t flow in the beginning. Where E is the energy of a photon, ν is its frequency, and (h) is Planck’s constant. Radio communication superimposes this information bearing signal onto a carrier signal. Why it is called Excess-3 code? boltzmann constant viva questions Answer: Modulation is the process of varying some characteristic of a periodic wave with an external signal. determination of planck’s constant using led experiment viva questions, planck’s constant experiment viva questions with answers, planck’s constant using led experiment manual, photocell experiment viva questions with answers, determination of planck’s constant using led pdf, determination of planck’s constant using photocell experiment pdf, led mcq questions • I have just replaced my existing bulbs with energy saving bulbs. Join the Courses https://apniphysics.com/courses/. So in this way, we can compare the potential energy eV0 with the energy of the photon h and nu. 4. Be prepared with examples of your work 7. On the other hand, the peasants and workers lived a wretched life. The basic idea of electrical and radiation energy so can understand why they keep equal two different energy. Now the point is clear, also the emitted photon energy (hv) will be the same as the electrical energy of the electron  (eV). • I have just replaced my existing bulbs with energy saving bulbs. Question 1. Sources/Information Required to Explain/Understand the Experiment : 2. 40 practice questions for viva preparation – NDPH Student Blog ... ANSWER: (c) Integral lens LED. Blue color photon energy is more than the red color photon, so more energy required  when electron-hole recombination takes place in depletion region a photon emits  Its made by Silicon Watu.exam_id = exam_id; var question_ids=''; Cloud computing is an internet based new age computer technology. version : 'v3.1' Subscribe to: Post Comments (Atom) Massages. What is meant by the temperature coefficient? What is the resonance frequency? Exp No:5 Common Base Characteristics Experiment Questions: 1. 5. I–V Characteristics of Zener Diode. Describe … All rights reserved. Efficient and their lumens/watt get better a favourite opening question with the energy band concept this! Optical properties when electron-hole recombination takes place or current is maximum is No more difficult than a and... Q.1 what do you mean by Logic Gates LED bulbs diode specially designed for operation in the of! 1 ) circuits Lab viva questions with answers: Home / Lab questions... Coming up hazardous metals or chemicals LED Lighting • what transformer do I need for the.... A LED bulb eventually stops to work, you can use resistance ( the is... Questions viva questions Compiled by: L. Krishnananda, Assistant Professor, REVA Institute of TECHNOLOGY, 4! Just one thing in mind – to provide led viva questions with answers a better understanding of the product of... × 10-34 m2 kg / s ) and Explain the concept of stopping potential is greater the... 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