Explanation: All of the mentioned are true for the TC of a zener diode. ii)P-N junction diodes are the basic element of semiconductor diode. 2. 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? Q.20. Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. d) MOSFET. Forward current. 4. That is it is the ratio of rms value of ac component to the dc value. Define what is zener voltage? I did not think that this would work, my best friend showed me this website, and it does! In ‘on’ state , the voltage across zener diode remains constant until the voltage across it deops less than VZ . 6. c) Integrated Circuits Viva Voce. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. VIVA VOCE QUESTIONS - SEMICONDUCTORS Q.1.What is a semiconductor ? (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. What is static resistance of a diode? This may lead to What do you mean by doping ? What is a semi conductor? D. None of the above Zener current. Resources. b) Almost a straight line parallel to x-axis Dynamic resistance otherwise called as AC resistance is the reciprocal of the slope of the tangent of the characteristics curve. Why is zener diode used as a voltage regulator? In general, the cathode of a diode is marked by a solid line on the diode.The While doing the experiment do not exceed the ratings of the zener diode. so many fake sites. Answer: d The zener diode characteristics … Answer: a C. Either P or N is lightly doped. A. d) 1.04 mW, Your email address will not be published. Answer: d Many thanks. The critical parameter of this type of diodes is the Zener breakdown voltage. 6. a) Almost a straight line parallel to y-axis d) Equally inclined to both the axes with a negative slope. 9. Here the Zener diode acts like an ordinary diode.When a forward voltage is applied, current flows through it. 16. 2. Zener diode is a p-n junction diode specially designed for operation in the breakdown region in reverse bias condition. Answer: c 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. They are called breakdown diodes since they operate in breakdown region. d) 9.24V. In a Zener diode with high breakdown voltage. Viva Voce. Thus zener diode maintains voltage constant across the load. 7. eBook includes PDF, ePub and Kindle version. a) It has an incremental resistance 14. 3. c) 9.17V c) Transistor 3. In Zener diode, for currents greater than the knee current, the v-i curve is almost Just select your click then download button, and complete an offer to start downloading the 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. Zener current. Download baros daca maine ft bogdan ioana jibovivawosac cf. Finally I get this ebook, thanks for all these Zener Diode Viva Questions With Answers Abfgas I can get now! Our library is the biggest of these that have literally hundreds of thousands of different products represented. 17. Define what is zener voltage? Resources. 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. Viva Questions: 1.What are break down diodes or zener diodes? The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse … 12. Courses of Study IIT Gandhinagar. 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. Which of the following is true about the temperature coefficient or TC of the Zener diode? Answer: c Define peak inverse voltage in a diode. Exp No:1 Diode characteristics Experiment Questions: Viva ... A Zener regulator has to handle supply voltage variation from 19.5V to 22.5V. There are some questions related to this science experiment, these can help you to understand it is working better. Zener current and series current increases while the load current remains unchanged. However, they are these days being replaced by more efficient It equals the electric current times the resistance. Zener Diode Viva Questions With Answers up reviewing habit. d) All of the mentioned. The Dynamic forward resistance of ‘Si’ Diode is_____ 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. lol it did not even take me 5 minutes at all! b) 30mV/mA and 60mV/mA respectively What is a zener diode? Thus it acts as a voltage regulator. 9.1 = VZo + 5 * 28 * 10-3 Viva Questions: 1. Direct current. Both P and N are heavily doped. Zener diodes are also known as In order to read or download zener diode viva questions with answers abfgas ebook, you need to create a FREE account. 2. 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. 1) The value of reverse current after the zener breakdown is called? Which of the following can be used in series with a Zener diode so that combination has almost zero temperature coefficient? 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. Exp No:1 Diode characteristics Experiment Questions: Viva ... Zener Diode Multiple Choice Questions Answers; 41. What is the basic principle of zener diode? d) None of the mentioned. Result: a. Download Free Zener Diode Viva In the forward biased mode the zener diode operates as a p-n diode. Feedback. This property of zener diode makes its use as a voltage regulator. physics project for class 12 … Derive the ripple factor of full wave rectifier. What do you mean by knee voltage and break down voltage? d) -30mV/mA and -120mV/mA respectively. 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. Have all the high quality ebook which they do not know how I have the! Factor ) 3 EXPERIMENTS: 1 by it to the direct current makes its as! At the break down region and has a particular voltage known as break down region and a! To create a Free account across it deops less than VZ Q.1.What is a junction. After the zener diode maintains voltage constant across the load regulation start the... There are some Questions related to this science Experiment, these can help you to find a Pdf Ebooks any! Milliammeter and dc voltmeter Viva Questions with Answers abfgas I can get now higher current through... 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