Viva Voce. What is the difference between p-n Junction diode and zener diode? A shunt regulator utilizing a zener diode with an incremental resistance of 5 Ω is fed through an 82-Ω resistor. It destroys the diode. What is a zener diode? Both P and N are lightly doped. File Type PDF Exp No 1 Diode Characteristics Experiment Questions Viva Exp No 1 Diode Characteristics Experiment Questions Viva If you ally obsession such a referred exp no 1 diode characteristics experiment questions viva books that will manage to pay for you worth, get the certainly best seller from us currently from several preferred authors. Resources. What do you mean by doping ? Explain V-I characteristic curve of a diode. Resources. Zener Diode Experiment Viva Questions port manteaux word maker onelook dictionary search. c) Transistor It has a particular voltage known as break down voltage, at which the diode break downs while reverse biased. Both P and N are heavily doped. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. 2. Answer: b Explanation: VZ = VZo + MZ IZT b) 9.03V Zener Diode Viva Questions With Answers up reviewing habit. Define what is zener voltage? Thus heavy current flows. c) 74.7 mV 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? Draw the VI Characteristics of Zener diode. The ripple factor is a measure of how successfully a rectifier converts ac to dc. Viva Questions: 1.What are break down diodes or zener diodes? A designer requires a shunt regulator of approximately 20 V. Two kinds of Zener diodes are available: 6.8-V devices with rz of 10 Ω and 5.1-V devices with rz of 30 Ω. c) For higher values of Zener voltage, TC is positive Thus zener diode maintains voltage constant across the load. c) Equally inclined to both the axes with a positive slope 1. i) P-N Junction diode is a piece of silicon with two terminals; one which is doped with P-type material and other is doped with N-type material. Which of the following is true about the resistance of a Zener diode? ii)P-N junction diodes are the basic element of semiconductor diode. Which of the following is true about the temperature coefficient or TC of the Zener diode? If there is a survey it only takes 5 minutes, try any survey which works for you. Forward current. 19. 6. In order to determine the mode, you can check the output voltage.. i) If you get positive output, it is in forward bias. when the voltage across the zener diode exceeds its zener voltage rating VZ) . Find the magnitude of regulating resistance, if the load resistance is … 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. Zener current. VZo = 8.96v Direct current. Give an application of zener diode ? Mention any application of zener diodes, 10. Forward current. Tag: pn junction diode characteristics experiment viva questions. 8. It decreases with the increase in diode … Ripple factor= V r(rms) /V dc . c) 10.4 mW VZ = 10.0 V, VZK = 9.6 V, and IZT = 50 mA. Explanation: Note that the curve is v-I curve and not an i-v curve. Planck’s Constant Viva Questions: Planck’s Constant using LED [determination of Planck’s constant by using light-emitting diodes (LEDs)] APPARATUS: Planck’s constant kit, wires, graph paper, and 3-4 LEDs. Our library is the biggest of these that have literally hundreds of thousands of different products represented. Theory/Principle: A PN junction is known as a semiconductor or crystal diode, so called because PN junction is grown out of a crystal. c) Breakdown diode Why is zener diode used as a voltage regulator? Partial specifications of a Zener diode is provided. We have made it easy for you to find a PDF Ebooks without any digging. 3. b) Resistor In Zener diode, for currents greater than the knee current, the v-i curve is almost Zener diode has the property of behaving like a dc battery in ‘on’ state. 15. a) 8.96V Dictionary com s List of Every Word of the Year. d) All of the mentioned. The Zener diode mainly operates in reverse biased condition. Exp No:1 Diode characteristics Experiment Questions: Viva ... Zener Diode Multiple Choice Questions Answers; 41. Zener current and series current increases while the load current remains unchanged. d) All of the mentioned. Assuming that the power rating of a breakdown diode is established at about twice the specified Zener current (IZT), what is the power rating of each of the diodes described above? 16. Explanation: Zener diodes are used as voltage regulators but they aren’t called voltage regulators. What do you mean by knee voltage and break down voltage? We should select a Zener diode with a breakdown voltage approximately equal to the voltage we need across the device. 5. I get my most wanted eBook. Thus it acts as a voltage regulator. Answer: a Conduct the experiment for obtaining the forward bias VI characteristics of the given diode.if the cut in voltage is .3V,it is Germanium diode.If it is .6,diode is made of silicon. Viva Voce. The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse … What is meant by the temperature coefficient? a) It has an incremental resistance If the raw supply changes by 1.0 V, what is the corresponding change in the regulated output voltage? ii) If you get negative output it is in reverse bias mode. There are some questions related to this science experiment, these can help you to understand it is working better. ELECTRICAL amp ELECTRONICS ENGINEERING. 12. Physics project for class 12 physicscatalyst s Blog. dictionary com s list of every word of the year. To draw the characteristics means behavior of current in forward and reverse bias of a semiconductor junction diode. It equals the electric current times the resistance. 9. 14. Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. 6. Many thanks. At this current the incremental resistance is specified as 5 Ω. What is a semi conductor? Find VZ0 of the Zener model. 4. Exp No:1 Diode characteristics Experiment Questions: Viva ... A Zener regulator has to handle supply voltage variation from 19.5V to 22.5V. Apparatus: Zener diode, Power Supply, dc milliammeter and dc voltmeter. A 9.1-V zener diode exhibits its nominal voltage at a test current of 28 mA. 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. 1. Explanation: ICs have been widely adapted by the industries over conventional zener diodes as their better replacements for a voltage regulators. 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 . The zener diode characteristics … b) For Zener voltage around 5V, TC can be made zero syllabus for b tech 1st year guru gobind singh. this is the first one which worked! 11. electrical amp electronics engineering. Updated CBSE Class 12th 3. It decreases when electric current increases. 1) The value of reverse current after the zener breakdown is called? In general, the cathode of a diode is marked by a solid line on the diode.The d) MOSFET. It … I did not think that this would work, my best friend showed me this website, and it does! c) 9.17V Physics Lab(15PHYL17/27) Viva Questions: EXPERIMENTS: 1. Define what is zener voltage? Characteristics of Zener Diode Aim:-To plot the characteristic curves for the zener diode and hence to determine knee and breakdown voltage. To get started finding Zener Diode Viva Questions With Answers Abfgas , you are right to find our website which has a comprehensive collection of manuals listed. VIVA VOCE QUESTIONS - SEMICONDUCTORS Q.1.What is a semiconductor ? Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. d) 1.04 mW, Your email address will not be published. They provide a low-cost and no frill method for voltage regulation. Here the Zener diode acts like an ordinary diode.When a forward voltage is applied, current flows through it. b) Forward bias diode 1) The value of reverse current after the zener breakdown is called? Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. 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. I–V Characteristics of Zener Diode. And the electron hole pair generation takes place. 2. In a Zener diode with high breakdown voltage. b) It has dynamic resistance What is meant by the temperature coefficient? Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. A graph of current through vs the voltage across the device is called the characteristic of Zener diode.The first quadrant is the forward biased region. Which of the following can be used in series with a Zener diode so that combination has almost zero temperature coefficient? A. Zener current. 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. When a high reverse voltage is applied across the junction, there will be very strong electric field at the junction. a) Voltage regulators Answer: b Diode characteristics Experiment Questions: 1.Experimently find out whether the given diode is made of Germanium or Silicon. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. Answer: d Explanation: Three 6.8v zeners provide 3*6.8 = 20.4v with 3 * 10 =30Ω Resistance, neglecting R, we have a) For Zener voltage less than 5V, TC is negative PN Junction Questions & Answers. 4. Just select your click then download button, and complete an offer to start downloading the ebook. the zener diode viva questions with answers abfgas, it is entirely easy then, back currently we extend the partner to buy and create bargains to ... 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 Answer: c (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Page 7/25. b) 30mV/mA and 60mV/mA respectively Viva Questions: 1.What are break down diodes or zener Direct current. Download baros daca maine ft bogdan ioana jibovivawosac cf. Zener Diode Viva Questions With ZENER DIODE LAB VIVA Questions :-1. 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. This diode either made by silicon or germanium which has atomic number Z=14 or Z=32 respectively. This is known as Zener break down. lol it did not even take me 5 minutes at all! 3 Theory of experiment The diode is a device formed from a junction of n-type and p-type semiconductor material. Explanation: All of the statements are true for the resistance of the zener diode. load Regulation = -30mV/mA. XD. a) Operational Amplifier 9. The voltage at which the zener diode breaks down is called the zener voltage. 2. c) The value of the resistance is the inverse of the slope of the i-v characteristics of the Zener diode Define what happens to the series current , load current and zener current when the dc input voltage of a zener regulator increases? Engineering 2021 , Engineering Interview Questions.com. physics project for class 12 … 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. Courses of Study IIT Gandhinagar. b) 0.104 W Download Free Zener Diode Viva The PN Junction Diode Viva Questions with Answers (i) What is a pn junction? My friends are so mad that they do not know how I have all the high quality ebook which they do not! We use Zener diodes for voltage regulation and voltage stabilisation. 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. Define peak inverse voltage in a diode. In order to read or download zener diode viva questions with answers abfgas ebook, you need to create a FREE account. … 17. Explain how zener diode maintains constant voltage across the load? Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. 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. 5. Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. b) 73.7 mV In the case of normal diodes the diode damages at the break down voltage. Answer: c d) None of the mentioned. Viva Questions: The voltage at which the zener diode breaks down is called the zener voltage. VZ = VZo + 5IZ = 8.96 * 5IZ. This property of zener diode makes its use as a voltage regulator. In the forward biased mode the zener diode operates as a p-n diode. We will then plot it to get the depen-dence. d) Equally inclined to both the axes with a negative slope. It is approximately constant. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. Required fields are marked *. When connected in reverse bias in series with a current limiting resistor, the voltage across the zener diode remains constant as long as a certain minimum current flows through it. By doing this experiment, we can find out the Zener breakdown voltage in a straightforward manner. 2. B. The zener diode is designed to operate in the reverse break down region and has a predetermined reverse break down voltage V z. a) Diode 2. ... What is true about the breakdown voltage in a Zener diode? In this calculation neglect the effect of the regulator resistance R. However, they are these days being replaced by more efficient d) 75.7 mV, 18. 1. Different Zener diodes have a different breakdown voltage. Explanation: All of the mentioned are true for the TC of a zener diode. d) -30mV/mA and -120mV/mA respectively. 3. The voltage at which the zener diode breaks down is called the zener voltage. Zener diodes are also known as Why it does not obey ohms law ? 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 eBook includes PDF, ePub and Kindle version. When a diode is heavily doped, it’s depletion region will be narrow. What is a zener diode? Answer: d Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. Result: a. 13. That is it is the ratio of rms value of ac component to the dc value. 7. Zener Diode Multiple Choice Questions Answers; 41. c) Integrated Circuits a) 72.7 mV Define depletion region of a diode? Both P and N are heavily doped. What is a p-n diode ? Q.20. In a Zener diode with high breakdown voltage. Feedback. 9.1 = VZo + 5 * 28 * 10-3 a) -30mV/mA and 120mV/mA respectively 12. It is acting as normal diode while forward biasing. 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. This may lead to What is a zener diode ? Explanation: If a Zener diode of TC of about -2mV is connected with a forward diode (which has a TC of about +2mV) in series, the combination can be used to obtain a very low (close to zero) TC. C. Either P or N is lightly doped. b) MOSFET load Regulation = -120mV/mA . d) None of the mentioned. b) Almost a straight line parallel to x-axis In the reverse biased mode zener diode has large breakdown voltage and though the current increases the voltage remains constant. ... Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. Zener diodes can be effectively used in voltage regulator. a) 1.04 W They are called breakdown diodes since they operate in breakdown region. Finally I get this ebook, thanks for all these Zener Diode Viva Questions With Answers Abfgas I can get now! d) 9.24V. Both P and N are lightly doped. For the two major choices possible, find the load regulation. The reverse breakdown voltage of zener diode is called zener voltage. Answer: d 7. What is the basic principle of zener diode? C. Either P or N is lightly doped. Zener Diode Experiment Viva Questions Port Manteaux Word Maker OneLook Dictionary Search. Viva Questions… 3. Your email address will not be published. Ans. But due to higher doping concentration, higher current flows through the Zener diode.In the third quadrant, the magic happens. 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. The critical parameter of this type of diodes is the Zener breakdown voltage. ie., Dynamic resistance = change in voltage/resulting change in current = ΔV/ΔI ... Physics Experiment's Viva Questions. The static or dc resistance of a diode is the resistance offered by it to the direct current . For 5.1 Zeners we need 4 diodes to provide 20.4v with 4 * 30 =120Ω Resistance. Diodes which are designed with adequate power dissipation capabilities to … ... What is true about the breakdown voltage in a Zener diode? Viva Questions: 1. ZENER DIODE LAB VIVA Questions :-1. While doing the experiment do not exceed the ratings of the zener diode. What is static resistance of a diode? so many fake sites. It is a substance with conduction properties between metals and insulators. It is approximately constant. Feedback. Home » ZENER DIODE Viva Questions » 50 TOP ZENER DIODE LAB VIVA Questions and Answers Pdf. MOST LIKELY VIVA-VOCE QUESTIONS VTU physics lab I-V CHARACTERISTICS OF ZENER DIODE 1. A. Derive the ripple factor of full wave rectifier. Dynamic resistance otherwise called as AC resistance is the reciprocal of the slope of the tangent of the characteristics curve. The Dynamic forward resistance of ‘Si’ Diode is_____ VIVA QUESTIONS: 1. D. None of the above ( Determination of resonant frequency and quality factor ) 3: 1.Experimently find out whether the given diode is doped! Guru gobind singh called the zener diode LAB Viva Questions with Answers abfgas ebook, you to! B ) Resistor c ) 9.17V d ) MOSFET Questions » 50 TOP zener diode Viva Questions with (! Element of semiconductor diode here the zener diode almost zero temperature coefficient or of... 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