Mar 5, 2018. Dear All, using the formula. EQE=R* (hc/e*wavelength)*100%. IQE=EQE/ (1-R) i calculated the values for my TIPS-pentacene phototransistors, which ranged from 1*10^-2% to -7*10^-3%. i. A viva simply means a university examination during which students answer questions in speech and these questions are commonly based on a particular project or discipline. Viva questions are an important part of an academic program and often take place at the conclusion of a semester/year Following are top 101 data ware house and data mining VIVA questions and answersWhat is data warehouse?A data warehouse is a electronic storage of an Organization's historical data for the purpose of reporting, analysis and data mining or knowledge discovery. What is the benefits of data warehouse? A data warehouse helps to integrate data and stor Hello everyone, Got a simple question about a phototransistor I bought in a local shop. I plugged an infrared emitting LED on one pin of a uC and it does flashes fine on a 1 second interval. The phototransistor is pointing completely in the other direction about 1 inch of the LED. The problem.. Transformer Questions and Answers Interview Viva. by admin · Published January 27, 2019 · Updated July 28, 2020 . What is the operating principle of a Transformer? A transformer works based on the principle of mutual induction. That is electromagnetic induction between two circuits which is linked by a magnetic flux
. What are Cascading Style Sheets? Called (CSS) is a list of statements (or rules) that can assign various rendering properties to HTML elements. Style rules can be specified for a single element occurrence, multiple elements, and entire document, or even multiple documents at once. 2. What is class CAO LAB VIVA Questions with Answers :-. 1. What are the types of computer? Personal computer, notebook computer, workstations, enterprise or mainframes. 2. What are the functional units of a computer? Input unit, memory unit, arithmetic and logic unit, output unit and control unit. 3 Also Read: 15 BEST TOP UML VIVA Questions and Answers 36) What is AIDL? AIDL, or Android Interface Definition Language, handles the interface requirements between a client and a service so both can communicate at the same level through interprocess communication or IPC. This process involves breaking down objects into primitives that Android. A phototransistor takes a certain amount of time to respond to sudden changes in light intensity. This response time is usually expressed by the rise time (t R) and fall time (t F) of the detector where: t R - The time required for the output to rise from 10% to 90% of its on-state value
Partner-ready Resources for Microsoft Viva and SharePoint Syntex. Apr 13 2021 12:58 PM. Since our announcements for Microsoft Viva and SharePoint Syntex over the past months, we've seen great energy and enthusiasm from our partners to help support our vision to reimagine employee experience in Microsoft 365. To help all partners succeed, we. Phototransistor. In addition to making photo junction devices from diodes, it is possible to construct a light sensor from transistors. Figuratively, a photo transistor is basically a combination of a photo diode and an amplification transistor. The representation of a phototransistor with photodiode and a transistor is shown below We can simply say that, a junction transistor is simply a sandwich of one type of semiconductor material between two layers of the other type.A transistor has three terminals namely emitter, base and collector. A transistor is a current sensing device. Transistor was developed in the year 1948 at BELL laboratories MICROPROCESSOR VIVA QUESTIONS AND ANSWERS MICROPROCESSOR VIVA QUESTIONS AND ANSWERS 1. What is a Microprocessor? Microprocessor is a CPU fabricated on a single chip, program-controlled device, which fetches the instructions from memory, decodes and executes the instructions. 2
Phototransistor measurements will be made between the collector and emitter terminals of the device We will be using a small lamp as a light source. The lamp will be set at a fixed distance from the transistor By varying the lamp voltage, we can change its brightness and observe how the photodiode and phototransistor currents var What is a Phototransistor? Phototransistors are either tri-terminal (emitter, base and collector) or bi-terminal (emitter and collector) semiconductor devices which have a light-sensitive base region. Although all transistors exhibit light-sensitive nature, these are specially designed and optimized for photo applications. These are made of diffusion or ion-implantation and have muc Phototransistor. The photodiode is a PN-junction diode, used to generate electric current once a photon of light strikes on their surface. The phototransistor is used to change the energy of the light into an electrical energy. It is less sensitive. It is more sensitive. The output response of photodiode is fast A phototransistor converts photons to charge directly, just like a photodiode, and in addition to this, a phototransistor also provides a current gain. The symbol of phototransistor is shown below. Like regular transistors, phototransistors also have large gain but the main difference is the size of the base - collector junction Hi everybody, first of all I'm french and new in the world of Arduino so forgive me for all my possible mistakes I would like to make a simple program: I would like to connect a LED (the on-board LED in fact) and a phototransistor to an Arduino Nano, and when the ambient light is hitting the phototransistor, nothing happens. But when I put light on the phototransistor (such as laser light.
VIVA QUESTION FOR ANALOG COMMUNICATION: 1. What is amplitude modulation? 2. What is modulation? 3. What are the different types of analog modulation? 4. What is the need for modulation? 5. What are the objectives met by modulation? 6. What are the advantages of PWM over PAM? 7. What is pulse position modulation? 8. What is the advantage of PPM. Viva Voce Questions on Polarimeter . Viva Voce Questions on Polarimeter . Viva Voce Questions on Polarimeter . Q. 1. What are you doing ? Ans. Sir, I am determining the specific rotation of cane sugar solution with the help of Laurentz half shade polarimeter (or Bi-quartz polarimeter, as the case may be) C-Programming VivA Questions. 1) What do you mean by Hardware and Software? All the electronic/electrical components and circuits used in a computer system are called hardware. A computer is actuated and controlled with the help of computer programs called software
Python Viva Question Mar 27, 2021 Python MCQ ( Multiple Choice Question ), Python Viva Question, Python Python Tags, 2301 Views This Post lists the List of Python Viva Question and Answers A phototransistor is similar to a regular BJT except that the base current is produced and controlled by light instead of a voltage source. The phototransistor effectively converts light energy to an electrical signal. In a phototransistor the base current is produced when light strikes the photosensitive semiconductor base region. The collector-base pn junction is exposed to incident light. However, my 880nm phototransistor datasheet indicates 600 uA at 1W/m^2 (0.1 mW/cm^2), wich is 30 times more. This assumes all the light is within the active range of the diode's junction. Sharp has a much better application note, but it seems to be lacking in explaining which design is best for which situations
If you have any suggestions, questions, or comments, please visit us on our Microsoft Viva Tech Community page. We will also be hosting our first Microsoft Viva Ask Microsoft Anything (AMA) event on June 23, 2021. Post your questions about Microsoft Viva and Viva Connections, where members of the Viva team will be available to respond. Learn more Types of PhD Viva Questions. Generally, examiners prepare a series of questions for you to answer at the PhD viva voce examination. These questions are primarily based on your thesis. However, the questions asked in PhD viva examinations can be broadly grouped under four basic headings: General Questions; Research Context and Methods; Analysis. The questions at my viva were extremely specific to the content of my thesis, and therefore some are difficult to predict, but most probably fit into a templates above. A couple of questions I couldn't answer and said I needed more time to think about that, since it involved some further work - I think that's a reasonable response to some. Viva questions. 1. ScaleS Q1. Define R.F.? Ans: Representative Fraction (R.F.) is measure of reduction or enlargement of dimensions of an object while drawing. It is defined as ratio of Length of drawing to Actual length of object, both measured in same units. Being a ratio, R.F. is unit less Following are the concepts of OOPS and are as follows:. Abstraction. Encapsulation. Inheritance. Polymorphism. 3. What is a class? A class is simply a representation of a type of object. It is the blueprint/ plan/ template that describe the details of an object
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Q14) Features of Bluetooth. Answer: Bluetooth is a standard that provides an Adhoc way of connecting device in range of 10m. It operates in 2.4GHz band and uses frequency hoping TDD method for each radio channel. Blutooth operates in unlicensed ISM band. Data rate of bluetooth ranges from 1Mbps to 3Mbps Thermochemistry Viva Questions with Answers. Chemistry Lab Manual NCERT Solutions Class 12 Chemistry Sample Papers. Question.1. Define enthalpy of neutralization. Answer. Enthalpy of neutralization of an acid or a base is the enthalpy change when one gram equivalent of the acid is neutralised by a base or vice versa Phototransistor | Symbol, Operation and Applications. The phototransistor is a semiconductor light sensor formed from a basic transistor with a transparent cover that provides much better sensitivity than a photodiode. It is basically a 3-layer semiconductor device which has a light-sensitive base region. The base senses the light and converts. Microsoft Viva is an employee experience platform (EXP) that elevates each employee's experience - how they learn, find knowledge, engage, and work, both for their wellbeing and the organization's success. Microsoft Viva Topics is an AI-powered solution that discovers, organizes, and surfaces what matters. It automatically organizes.
This all are expected questions for WN viva. 1. What is Wireless Network ? 2. What are the components you require to establish a network infrastructure mode ? 3. What are types of wireless networks ? 4. Explain wireless body area networks ( WBAN ) ? 5. What are the advantages and disadvantage of WBAN A capacitor is connected between base and emitter of the phototransistor. This acts in effect like a low pass filter, adding some smoothing to the input signal, and bypassing sharp spikes. It does reduce signal sensitivity and introduce a delay, though. For a quick and dirty value, use a 0.1 nF capacitor, though it is worth trying higher and. Workshop Technology Viva ,Objective questions with Answers For Mechanical Students Q.1 What is the importance of workshop? ANS:- Workshop is the center of learning about engineering Materials, manufacturing practices, equipments, tools and safety precaution to be observed in manufacturing operations Java questions for viva 1. Java Questions 1. Q: What do you know about Java? A: Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. 2 Microsoft Viva Topics. AU$6.90 user/month. annual commitment. Prices shown here and on following pages do not include GST. The Payment and Billing page will show amounts payable including GST (if applicable) before you purchase. Buy now
(I know the question is old, but here is my answer for reference) To detect a black line on the surface I would say that you need a reflex sensor (IR transmitter and receiver in one). If you only use a phototransistor, you will shadow yourself (My guess is that you want some sort of robot to follow/detect the line) Satellite Communication Viva Questions with Answers - Part 5 -Sunday, May 23, 2021. Q71) Difference between Active and Passive satellite. Answer: Passive satellites are simply metal coated plastic balloons. Active satellites consist of transmitting antennas (fr reception and transmission) and power suppl Viva Digital is a platform for online educational resources, interactive learning and teacher support from Viva Education, India's premier publisher of school books and learning apps
Common PhD viva Question 1. VIVA There are two types of viva examination (viva voce) which the examiner could adopt. The first one is chapter to chapter approach. The second one is random approach. Have to be prepared for the both approach! - can ask SV too if he knows what approach would the examiner use. Greet the examiner. Always listen to. Four Probe Method - VIVA QUESTIONS. Mar 16, 2017. Manas Sharma. The following are some of the frequently asked questions for Viva of the Four Probe Experiment, to determine the resistivity and Energy Band gap of a semiconductor. Why is Four-Probe method preferred over other conventional methods for measuring resistivity
Class 12 Ip Viva Questions. Class 12 Ip Viva Questions for Practical your forth coming Practical Examination. This is a suggestive list and you are required to at-least prepare these questions for your IP practical examination as these are the most common and most asked questions. Some of these Ip Viva Questions have suggestive answers, You are. Programming Questions. system July 27, 2012, 3:52am #1. i just bought a phototransistor, you like to know how to hook it up. maybe just make it turn on an led with the sense of light from a tv remote. anything really to get me started with it. thanks. system July. Named after its creator James Franck and Gustav Hertz.On December 10,1926, Franck and Hertz were awarded the 1925 Nobel Prize in Physics for their discovery of the laws governing the impact of an electron upon an atom. Q.What is the use of setting VG1K at 1.5 volts? A.It is used to accelerate the electrons emitte ., a list of questions has been prepared. These are the questions usually asked by the examiners. Make sure to revise the file you have prepared
power system protection viva questions Power System Protection and Relays Questions & Answers. What is protective relay? It is an electrical device designed to initiate the isolation of a part of the electrical. Power Systems Operation and Control Interview questions Viva Questions and Answers on Digital Signal Processing. 1. Differentiate between a discrete time signal and a digital signal. A discrete time signal can be defined as a signal, which is continuous in amplitude and discrete in time. In other words, a discrete time signal gives signal values only at particular (discrete) interval of time period Ans: b. 11. When an iron piece is placed in a magnetic field. (a) the magnetic lines of force will bend away from their usual paths in order to go away from the piece. (b) the magnetic lines of force will bend away from their usual paths in order to pass through the piece. (c) the magnetic field will not be affected
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Every single question in the viva is being asked for a reason. It might not be immediately clear to you what that reason is. Every single question in the viva is going to be asked by one of your examiners, or by you. You can't know what questions your examiners will have, but you might have ideas Viva Question Repository. The Viva Voce (aka Defense) Question Repository! This is a repository of questions that were asked at Vivas of students, just like you. Look up what questions you can expect in your Viva! Don't get caught off-guard. (Pro tip: Want to sort by more than one heading? Hold shift and click the headings you want to sort by. IR Phototransistor pinout/hookup question. Using Arduino. General Electronics. interestingfellow November 22, 2015, 3:02pm #41. Well, that makes me feel better; I was making a mistake, just not the one I thought. Thanks, agian, y'all Amazing 27- Viva Questions (e m ratio) Charge to Why we rotate Michelson Morley Interferometer Categories Expt Viva Tags bsc physics practical experiments 3rd year , michelson interferometer experiment , Physics , Viva Post navigatio During the viva voce, the evaluators are at liberty to ask whatever question they feel is related to the topic and the candidate has the obligation of answering the question satisfactorily. Simply put, a viva voce is an oral presentation that is aimed at proving that the researcher commands knowledge on the topic and has gained knowledge on the.
Rectifier Viva Questions and Answers. 1. Mention the difference of AC and DC power supply. Give the advantages of both? The alternating current supply (Ac supply) is sinusoidal function and is a function of time (t). That is as time changes, the value of the AC supply also changes ANALOG COMMUNICATION VIVA QUESTIONS WITH ANSWER SET-1 Q1. What is amplitude modulation? Ans: The process of amplitude modulation consists of varying the peak amplitude of a sinusoidal carrier wave in proportion to the instantaneous amplitude of the modulation signal Class 12th Accountancy Sample Viva Questions 2020 1. (For Free Circulation to any teacher or student of Commerce) 12th Accountancy Sample Viva Questions (For the Students of Commerce ) APPEARING IN C.B.S.E.BOARD EXAMS.2020 Date of publishing - 21.12.2019 This manual contains the sample questions for students, to have an idea of what type of questions are usually expected to be asked from them. Preparing for your viva. In the UK, the oral examination is usually conducted behind closed doors by at least two examiners, usually with at least one being from another institution (external examiner) and an expert in your topic of research. In the UK the supervisor does not participate in the viva, but may be allowed to observe Viva Project FAQ Click on a question to show the answer. - My VR control buttons don't work! - My loli looks glitchy/invisible when I spawn her! The cards must go in their own folders, all located in Viva Folder/Cards. All clothing cards goes into the Clothing folders. You should have a Character and Skin card for your character, simply.