dictionary com s list of every word of the year. 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. 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? this is the first one which worked! Finally I get this ebook, thanks for all these Zener Diode Viva Questions With Answers Abfgas I can get now! 3. 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. It is acting as normal diode while forward biasing. What is the basic principle of zener diode? It destroys the diode. d) -30mV/mA and -120mV/mA respectively. What is a zener diode ? ... What is true about the breakdown voltage in a Zener diode? To draw the characteristics means behavior of current in forward and reverse bias of a semiconductor junction diode. a) It has an incremental resistance When a diode is heavily doped, it’s depletion region will be narrow. Zener diode is a P-N junction diode specially designed to operate in the reverse biased mode. c) 9.17V They provide a low-cost and no frill method for voltage regulation. b) 73.7 mV That is it is the ratio of rms value of ac component to the dc value. It … c) Equally inclined to both the axes with a positive slope Engineering 2021 , Engineering Interview Questions.com. 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. Explanation: Note that the curve is v-I curve and not an i-v curve. Mention any application of zener diodes, 10. Define what is zener voltage? Resources. b) 0.104 W In the reverse biased mode zener diode has large breakdown voltage and though the current increases the voltage remains constant. VZ = 10.0 V, VZK = 9.6 V, and IZT = 50 mA. 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. For 5.1 Zeners we need 4 diodes to provide 20.4v with 4 * 30 =120Ω Resistance. VIVA VOCE QUESTIONS - SEMICONDUCTORS Q.1.What is a semiconductor ? We use Zener diodes for voltage regulation and voltage stabilisation. XD. It decreases with the increase in diode … There are some questions related to this science experiment, these can help you to understand it is working better. Draw the VI Characteristics of Zener diode. Both P and N are lightly doped. The Zener breakdown voltage is the minimum reverse biased voltage below which the diode blocks the reverse … The voltage at which the zener diode breaks down is called the zener voltage. Both P and N are heavily doped. 4. 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 Questions: 1. Here the Zener diode acts like an ordinary diode.When a forward voltage is applied, current flows through it. 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