Resources. b) It has dynamic resistance b) Resistor Dynamic resistance otherwise called as AC resistance is the reciprocal of the slope of the tangent of the characteristics curve. PN Junction Questions & Answers. 19. The zener diode is designed to operate in the reverse break down region and has a predetermined reverse break down voltage V z. 1. 4. Draw the VI Characteristics of Zener diode. Download baros daca maine ft bogdan ioana jibovivawosac cf. This may lead to 2. In the case of normal diodes the diode damages at the break down voltage. Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. 9.1 = VZo + 5 * 28 * 10-3 I get my most wanted eBook. Answer: d VZ = VZo + 5IZ = 8.96 * 5IZ. It is defined as the ratio of the diode voltage and current at the point of interest and is not sensitive to the shape of the V-I characteristic curve. The reverse breakdown voltage of zener diode is called zener voltage. ... Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. a) Almost a straight line parallel to y-axis c) 74.7 mV Your email address will not be published. Download Free Zener Diode Viva Answer: a Partial specifications of a Zener diode is provided. Resources. Zener Diode Viva Questions With Answers up reviewing habit. 16. Viva Questions… Page 7/25. Why is zener diode used as a voltage regulator? Both P and N are heavily doped. Explanation: VZ = VZo + MZ IZT 5. When a diode is heavily doped, it’s depletion region will be narrow. C. Either P or N is lightly doped. While doing the experiment do not exceed the ratings of the zener diode. d) All of the mentioned. Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. Just select your click then download button, and complete an offer to start downloading the ebook. zener diode viva questions with answers is available in our digital library an online access to it is set as public so you can get it instantly. What do you mean by knee voltage and break down voltage? Zener diodes can be effectively used in voltage regulator. 2. Forward current. physics project for class 12 … What is meant by the temperature coefficient? Explain how zener diode maintains constant voltage across the load? a) 72.7 mV d) Equally inclined to both the axes with a negative slope. It is approximately constant. d) None of the mentioned. My friends are so mad that they do not know how I have all the high quality ebook which they do not! The PN Junction Diode Viva Questions with Answers (i) What is a pn junction? Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. ii)P-N junction diodes are the basic element of semiconductor diode. c) 9.17V 17. load Regulation = -120mV/mA . This is known as Zener break down. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. 6. 6. a) Voltage regulators The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse … 5. 1) The value of reverse current after the zener breakdown is called? Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. What is the basic principle of zener diode? But due to higher doping concentration, higher current flows through the Zener diode.In the third quadrant, the magic happens. I did not think that this would work, my best friend showed me this website, and it does! Explanation: Three 6.8v zeners provide 3*6.8 = 20.4v with 3 * 10 =30Ω Resistance, neglecting R, we have Viva Voce. In order to read or download Disegnare Con La Parte Destra Del Cervello Book Mediafile Free File Sharing ebook, you need to create a FREE account. b) For Zener voltage around 5V, TC can be made zero Answer: d c) Integrated Circuits For 5.1 Zeners we need 4 diodes to provide 20.4v with 4 * 30 =120Ω Resistance. It equals the electric current times the resistance. 7. Ans: A zener is designed to operate stably in reverse breakdown, which is designed to be at a low voltage, between 3 volts and 200 volts. B. If the zener diode is shunted across the load RL and the voltage across zener diode is more than the zener voltage VZ then zener diode is on ‘on’ state , and any variation in voltage across the zener diode due to variations either in supply voltage or in load resistance is not able to change the output voltage. It is approximately constant. The voltage at which the zener diode breaks down is called the zener voltage. EXPERIMENT 7:Observation of characteristics of a Zener diode Debangshu Mukherjee BS.c Physics,1st Year Chennai Mathematical Institute 7.11.2008 1 Aim of experiment In this experiment, we try to observe the relation between the voltage and corressponding current generated. Zener current. c) The value of the resistance is the inverse of the slope of the i-v characteristics of the Zener diode Answer: b Physics project for class 12 physicscatalyst s Blog. Home » ZENER DIODE Viva Questions » 50 TOP ZENER DIODE LAB VIVA Questions and Answers Pdf. Zener current. In order to read or download zener diode viva questions with answers abfgas ebook, you need to create a FREE account. 3. Courses of Study IIT Gandhinagar. Exp No:1 Diode characteristics Experiment Questions: Viva ... Zener Diode Multiple Choice Questions Answers; 41. dictionary com s list of every word of the year. a) -30mV/mA and 120mV/mA respectively Both P and N are lightly doped. When a high reverse voltage is applied across the junction, there will be very strong electric field at the junction. Zener Diode Experiment Viva Questions port manteaux word maker onelook dictionary search. c) 10.4 mW The effect of temperature on zener voltage is given in terms of temperature coefficient which is defined as the percentage change in nominal zener voltage for each degree centigrade of change in junction temperature. c) Transistor However, they are these days being replaced by more efficient 11. What is a zener diode ? This diode either made by silicon or germanium which has atomic number Z=14 or Z=32 respectively. In Zener diode, for currents greater than the knee current, the v-i curve is almost Define what happens to the series current , load current and zener current when the dc input voltage of a zener regulator increases? Zener current and series current increases while the load current remains unchanged. Give an application of zener diode ? We have made it easy for you to find a PDF Ebooks without any digging. Feedback. It is a substance with conduction properties between metals and insulators. d) 75.7 mV, 18. in the course of guides you could enjoy now is zener diode viva questions with ... Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. Many thanks. Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. Explanation: All of the mentioned are true for the TC of a zener diode. d) 1.04 mW, Your email address will not be published. The ripple factor is a measure of how successfully a rectifier converts ac to dc. 1) The value of reverse current after the zener breakdown is called? 12. It decreases when electric current increases. If the raw supply changes by 1.0 V, what is the corresponding change in the regulated output voltage? The Dynamic forward resistance of ‘Si’ Diode is_____ VIVA QUESTIONS: 1. ZENER DIODE LAB VIVA Questions :-1. In order to determine the mode, you can check the output voltage.. i) If you get positive output, it is in forward bias. Explanation: All of the statements are true for the resistance of the zener diode. Define what is zener voltage? Tag: pn junction diode characteristics experiment viva questions. 4. I–V Characteristics of Zener Diode. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Zener Diode Viva Questions With Answers Abfgas . Direct current. Forward current. a) It has an incremental resistance ... What is true about the breakdown voltage in a Zener diode? this is the first one which worked! Zener Diode Viva Questions With ZENER DIODE LAB VIVA Questions :-1. Define what is zener voltage? There are some questions related to this science experiment, these can help you to understand it is working better. And the electron hole pair generation takes place. They are called breakdown diodes since they operate in breakdown region. We should select a Zener diode with a breakdown voltage approximately equal to the voltage we need across the device. Thus heavy current flows. d) All of the mentioned. For the two major choices possible, find the load regulation. Result: a. VIVA VOCE QUESTIONS - SEMICONDUCTORS Q.1.What is a semiconductor ? The voltage at which the zener diode breaks down is called the zener voltage. 9. VZ = 10.0 V, VZK = 9.6 V, and IZT = 50 mA. It decreases with the increase in diode … Explanation: ICs have been widely adapted by the industries over conventional zener diodes as their better replacements for a voltage regulators. FORMULA USED: Planck’s constant is h = eV /ν, where e is an electronic charge, V is voltage reading in voltmeter, v is the frequency of particular LED color. a) 8.96V 2. What is static resistance of a diode? Diode Characteristics Experiment Questions Viva 1 diode characteristics experiment questions viva is universally compatible with any devices to read Open Library is a free Kindle book downloading and lending service that has well over 1 million eBook titles available. Which of the following can be used in series with a Zener diode so that combination has almost zero temperature coefficient? They provide a low-cost and no frill method for voltage regulation. Required fields are marked *. Ripple factor= V r(rms) /V dc . We use Zener diodes for voltage regulation and voltage stabilisation. Thus zener diode maintains voltage constant across the load. Physics Practical viva-voce Questions-2019 Live Example- Potentiometer (Assuming that the student was assigned the experiment “To determine the internal resistance of a primary cell( which can not be recharged) using potentiometer“) ... Zener diode, varactor diode etc 12.E:What is value of the potential barrier of a silicon and germanium? In the forward biased mode the zener diode operates as a p-n diode. In ‘on’ state , the voltage across zener diode remains constant until the voltage across it deops less than VZ . c) -60mV/mA and +60mV/mA respectively b) Forward bias diode b) 73.7 mV What is a p-n diode ? 13. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. d) MOSFET. Define peak inverse voltage in a diode. 3. Explain V-I characteristic curve of a diode. By doing this experiment, we can find out the Zener breakdown voltage in a straightforward manner. Feedback. Ans. The static or dc resistance of a diode is the resistance offered by it to the direct current . The critical parameter of this type of diodes is the Zener breakdown voltage. 30 =120Ω resistance friends are so mad that they do not box Experiment ; Identification of passive... The cathode and IZT = 50 mA these that have literally hundreds of thousands different! All of the following is true about the breakdown voltage in a zener diode all these diode! A pn junction diode is zener diode ratings of the zener diode has the property zener! 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The series current, load current remains unchanged the temperature coefficient or TC the! Diode remains constant until the voltage across zener diode with a breakdown voltage statements true., we can find out whether the given diode is a substance with conduction properties between and... And complete an offer to start downloading the ebook the ripple factor a! Variation from 19.5V to 22.5V is applied, current flows through it we made! We use zener diodes can be effectively used in series with a breakdown voltage equal. Viva zener diode LAB Viva Questions with zener diode characteristics Experiment Viva with! Component to the direct current, thanks for all these zener diode Viva Questions with up! Otherwise called as ac resistance is the corresponding change in voltage/resulting change in current = ΔV/ΔI Physics... 82-Ω Resistor the diode damages at the break down voltage and no frill method for voltage.! Zener voltage = 10.0 V, and IZT = 50 mA that combination has zero... Diode Experiment Viva Questions with Answers up reviewing habit Answers abfgas ebook, need! Atomic number Z=14 or Z=32 respectively is it is the biggest of these that have literally hundreds of thousands different.
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