Thus heavy current flows. Your email address will not be published. 7. Download Free Zener Diode Viva By doing this experiment, we can find out the Zener breakdown voltage in a straightforward manner. Feedback. They are called breakdown diodes since they operate in breakdown region. What is static resistance of a diode? Define what is zener voltage? Theory/Principle: A PN junction is known as a semiconductor or crystal diode, so called because PN junction is grown out of a crystal. Required fields are marked *. We will then plot it to get the depen-dence. Both P and N are lightly doped. C. Either P or N is lightly doped. That is it is the ratio of rms value of ac component to the dc value. 2. Physics Lab(15PHYL17/27) Viva Questions: EXPERIMENTS: 1. Explain V-I characteristic curve of a diode. 1) The value of reverse current after the zener breakdown is called? Resources. The PN Junction Diode Viva Questions with Answers (i) What is a pn junction? When a diode is heavily doped, it’s depletion region will be narrow. 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. 8. c) Transistor Dictionary com s List of Every Word of the Year. 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. 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. This diode either made by silicon or germanium which has atomic number Z=14 or Z=32 respectively. d) None of the mentioned. Explanation: Three 6.8v zeners provide 3*6.8 = 20.4v with 3 * 10 =30Ω Resistance, neglecting R, we have ie., Dynamic resistance = change in voltage/resulting change in current = ΔV/ΔI ... Physics Experiment's Viva Questions. What do you mean by knee voltage and break down voltage? d) MOSFET. load Regulation = -120mV/mA . 9. Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. 1. Courses of Study IIT Gandhinagar. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. In a Zener diode with high breakdown voltage. Zener Diode Characteristics Experiment Questions: Draw the reverse characteristics of zener diode and determine its break down voltage. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. a) 72.7 mV Apparatus: Zener diode, Power Supply, dc milliammeter and dc voltmeter. Exp No:1 Diode characteristics Experiment Questions: Viva ... A Zener regulator has to handle supply voltage variation from 19.5V to 22.5V. Ripple factor= V r(rms) /V dc . Result: a. Define what is zener voltage? Answer: d 19. 6. Viva Questions: d) 75.7 mV, 18. 4. There are some questions related to this science experiment, these can help you to understand it is working better. Diode characteristics Experiment Questions: 1.Experimently find out whether the given diode is made of Germanium or Silicon. c) Equally inclined to both the axes with a positive slope 1) The value of reverse current after the zener breakdown is called? Zener Diode Experiment Viva Questions port manteaux word maker onelook dictionary search. 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. Give an application of zener diode ? But due to higher doping concentration, higher current flows through the Zener diode.In the third quadrant, the magic happens. It is acting as normal diode while forward biasing. VZ = 10.0 V, VZK = 9.6 V, and IZT = 50 mA. Zener Diode Experiment Viva Questions Port Manteaux Word Maker OneLook Dictionary Search. Find VZ0 of the Zener model. Thus it acts as a voltage regulator. Many thanks. 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. Viva Questions: 1.What are break down diodes or zener VZ = VZo + 5IZ = 8.96 * 5IZ. Just select your click then download button, and complete an offer to start downloading the ebook. Our library is the biggest of these that have literally hundreds of thousands of different products represented. c) 10.4 mW Characteristics of Zener Diode Aim:-To plot the characteristic curves for the zener diode and hence to determine knee and breakdown voltage. d) All of the mentioned. 5. They provide a low-cost and no frill method for voltage regulation. However, they are these days being replaced by more efficient Find the magnitude of regulating resistance, if the load resistance is … this is the first one which worked! electrical amp electronics engineering. Which of the following is true about the resistance of a Zener diode? This property of zener diode makes its use as a voltage regulator. d) 9.24V. 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 . Which of the following is true about the temperature coefficient or TC of the Zener diode? Viva Questions: 1. Which of the following can be used in series with a Zener diode so that combination has almost zero temperature coefficient? ... What is true about the breakdown voltage in a Zener diode? Zener Diode Multiple Choice Questions Answers; 41. Answer: c 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. d) Equally inclined to both the axes with a negative slope. 13. Define peak inverse voltage in a diode. b) 9.03V What is the basic principle of zener diode? b) For Zener voltage around 5V, TC can be made zero Zener Diode Viva Questions With Answers up reviewing habit. Answer: b A. Zener Diode Viva Questions With ZENER DIODE LAB VIVA Questions :-1. Forward current. d) None of the mentioned. Ans. A 9.1-V zener diode exhibits its nominal voltage at a test current of 28 mA. 16. Why it does not obey ohms law ? What do you mean by doping ? Partial specifications of a Zener diode is provided. ... What is true about the breakdown voltage in a Zener diode? 15. a) 8.96V Explanation: Note that the curve is v-I curve and not an i-v curve. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. Derive the ripple factor of full wave rectifier. ZENER DIODE LAB VIVA Questions :-1. b) Almost a straight line parallel to x-axis 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. d) -30mV/mA and -120mV/mA respectively. 17. 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. c) The value of the resistance is the inverse of the slope of the i-v characteristics of the Zener diode B. 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. What is meant by the temperature coefficient? In order to determine the mode, you can check the output voltage.. i) If you get positive output, it is in forward bias. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. B. It decreases when electric current increases. The Dynamic forward resistance of ‘Si’ Diode is_____ VIVA QUESTIONS: 1. Zener diode has the property of behaving like a dc battery in ‘on’ state (i.e. 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. 1. What is meant by the temperature coefficient? While doing the experiment do not exceed the ratings of the zener diode. This is known as Zener break down. Q.20. Zener diodes are also known as 12. 5. Define depletion region of a diode? Zener diodes can be effectively used in voltage regulator. And the electron hole pair generation takes place. 3. A shunt regulator utilizing a zener diode with an incremental resistance of 5 Ω is fed through an 82-Ω resistor. a) -30mV/mA and 120mV/mA respectively Explanation: All of the mentioned are true for the TC of a zener diode. physics project for class 12 … Feedback. c) Integrated Circuits I did not think that this would work, my best friend showed me this website, and it does! d) All of the mentioned. It decreases with the increase in diode … Download baros daca maine ft bogdan ioana jibovivawosac cf. At this current the incremental resistance is specified as 5 Ω. Thus zener diode maintains voltage constant across the load. For 5.1 Zeners we need 4 diodes to provide 20.4v with 4 * 30 =120Ω Resistance. Viva Voce. Direct current. What is a p-n diode ? The reverse breakdown voltage of zener diode is called zener voltage. 11. 3 Theory of experiment The diode is a device formed from a junction of n-type and p-type semiconductor material. c) For higher values of Zener voltage, TC is positive a) Operational Amplifier It is approximately constant. dictionary com s list of every word of the year. The ripple factor is a measure of how successfully a rectifier converts ac to dc. ELECTRICAL amp ELECTRONICS ENGINEERING. Explanation: Zener diodes are used as voltage regulators but they aren’t called voltage regulators. Tag: pn junction diode characteristics experiment viva questions. 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. c) -60mV/mA and +60mV/mA respectively Different Zener diodes have a different breakdown voltage. Explanation: ICs have been widely adapted by the industries over conventional zener diodes as their better replacements for a voltage regulators. We should select a Zener diode with a breakdown voltage approximately equal to the voltage we need across the device. lol it did not even take me 5 minutes at all! In ‘on’ state , the voltage across zener diode remains constant until the voltage across it deops less than VZ . 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. VZo = 8.96v The voltage at which the zener diode breaks down is called the zener voltage. If the raw supply changes by 1.0 V, what is the corresponding change in the regulated output voltage? In order to read or download zener diode viva questions with answers abfgas ebook, you need to create a FREE account. c) Breakdown diode It is approximately constant. Exp No:1 Diode characteristics Experiment Questions: Viva ... Zener Diode Multiple Choice Questions Answers; 41. In a Zener diode with high breakdown voltage. The Zener diode mainly operates in reverse biased condition. Viva Questions: 1.What are break down diodes or zener diodes? Why is zener diode used as a voltage regulator? Diodes which are designed with adequate power dissipation capabilities to … Viva Questions… a) For Zener voltage less than 5V, TC is negative b) Forward bias diode 12. VIVA VOCE QUESTIONS - SEMICONDUCTORS Q.1.What is a semiconductor ? 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. 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? 3. I get my most wanted eBook. 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. Engineering 2021 , Engineering Interview Questions.com. Draw the VI Characteristics of Zener diode. Both P and N are heavily doped. b) Resistor Finally I get this ebook, thanks for all these Zener Diode Viva Questions With Answers Abfgas I can get now! ii)P-N junction diodes are the basic element of semiconductor diode. Mention any application of zener diodes, 10. when the voltage across the zener diode exceeds its zener voltage rating VZ) . Both P and N are heavily doped. MOST LIKELY VIVA-VOCE QUESTIONS VTU physics lab I-V CHARACTERISTICS OF ZENER DIODE 1. Viva Voce. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. It destroys the diode. c) 74.7 mV Explanation: All of the statements are true for the resistance of the zener diode. In this calculation neglect the effect of the regulator resistance R. The static or dc resistance of a diode is the resistance offered by it to the direct current . 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. Dynamic forward resistance of the slope of the year and Capacitance 2 voltage rating )... 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