E. P-Type Silicon– P-type silicon is created by doping with compounds containing one less valence electrons* than Si does, such as with Boron. Q.how does the photon proceed in a solar cell? Which of the two cells, the primary or the secondary, is used in automobiles and why ? However, there are ambivalent views about solar, or photovoltaic, cells' ability to supply a significant amount of energy relative to global needs. In this video we will Study the Characteristics of Solar cell. PHYSICS LAB VIVA-QUESTIONS Torsional Pendulum: 1. Name two important functions of G proteins. ( Log Out / The contact grid must be large enough to collect electrons yet cover as little of the solar cell’s surface, allowing more photons to penetrate. A. JUNCTION DIODES Questions and Answers pdf :-1. Series arrangement of solar cells. Viva Voce Questions on Polarimeter . Q. For any photo detector (or solar cell) its performance in the dark (given in the form of an I-V curve, i.e. 8 70 Viva voce for Expt.81 71 . Solar V cell I Use the flux meter to determine the input intensities (be sure you understand the scale). C. The Antireflective Coating (AR Coating)– Through a combination of a favorable refractive index, and thickness, this layer serves to guide light into the solar cell. Change ), You are commenting using your Google account. ( Log Out / 3. Two meters mounted on the front panel to measure the solar cell voltage and current. 2. These technologies sound good in theory, but we have been hearing for a long time about “the coming solar revolution” or about how our dependence on fossil fuels will soon be “gone with the wind”… and yet fossil fuels still continue to reign supreme. For good solar cell, this must be small. Solar cell is the basic unit of solar energy generation system where electrical energy is extracted directly from light energy without any intermediate process. In the n-type silicon layer, the free electrons are called majority carriers whereas the holes are called minority carriers. Question2: What are the parameters that affect actual generation? The LED works on the principle of semiconductor diode, to flow the current from n to p-type semiconductor a minimum potential is required. 4- Without changing the desk lamp and solar cell distance, cover the solar cell with a blue filter. Each solar panel consists of 12 individual solar cells connected in series. An instrument for measuring an electromotive force by balancing it against the potential difference produced by passing a known current through a known variable resistance. A secondary cell has a very low value of internal resistance. Physics Lab(15PHYL17/27) Viva Questions: EXPERIMENTS: 1. 5.What is the graph of solar cell gives? Solar cell is which biased? View all posts by Divya Prakash Srivastava. The balance of good and bad awaits your vision. A. • Those pro, contend: Solar energy is abundant, in exhaustible, clean, and cheap. ... vtu 3rd sem CSE branch,EC lab VIVA question and answers… MOSFET,I-V characteristics ,MOSFET operations,MOSFETconstruction and working,body effect, advantages of MOSFET be freshers interview questions and answers ... A large number of cells are connected in parallel to form a complete device. 4. A.A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by thephotovoltaic effect. In addition to everyday objects such as solar calculators or solar garden lamps, photovoltaic power plants are becoming more and more common. A.A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by thephotovoltaic effect.. Q.Explain the operation of photovoltaic cell. Change ), An ongoing discussion about SAP infrastructure. Ans. = series. Secondary cell is used because it delivers the desired large starting current due to its low internal A.When a current carrying conductor is placed in a magnetic field mutually perpendicular to the direction of current a potential difference is developed at right angle to both the magnetic and electric field.This phenomenon is called Hall effect. A. Encapsulate – The encapsulate, made of glass or other clear material such clear plastic, seals the cell from the external environment. B. J 01 J 02 Rp Rs b 1 b 2 V ja V Image by MIT OpenCourseWare. That energy allows the valence electron to escape its orbit leaving behind a hole. Without this layer, much of the light would simply bounce off the surface. The contact surface between the layers of p-type and n-type semiconductor pieces plated together so as … Contact Grid– The contact grid is made of a good conductor, such as a metal, and it serves as a collector of electrons. A. A.Yes it does the photon’s energy transfers to the valence electron of an atom in the n-type Si layer. Why does a secondary cell provide more current than a primary cell of same e.m.f. What are G proteins? How Planck’s constant is determined?”Planck’s constant is determined by using the light-emitting diode. 0.26 V C. 1.1 V D. 2 V Solar Cell Multiple Choice Questions and Answers. 6.What is short circuit … Ans. Which of the following constitutes the major load for an automobile battery? APPRATUS REQUIRED: Solar cell mounted on the front panel in a metal box with connections brought out on terminals. CELL BIOLOGY LAB VIVA Questions and Answers :-1. Change ), You are commenting using your Twitter account. A module in a solar panel refers to a. 5- Record the cell current in table 3. Draw Golgi apparatus and label its parts. The operation of a photovoltaic (PV) cell requires 3 basic attributes: Q.What are the different layers of a solar cell? A typical output of a solar cell is . Draw a diagram to explain the processes of endocytosis and … A.It is numerically equal to Hall electric field induced in… Hello friends welcome, today we are going to discuss some important viva questions on PN JUNCTION DIODE AND TRANSISTOR IN HINDI. Apparatus for Characteristic Study of Solar Cell (Model No: HO-ED-SC-01) is an effective tool for evaluating the characteristics of solar cell. 46. Change ), You are commenting using your Facebook account. A solar cell is a semiconductor PN junction diode as shown in figure 1. 1 EXPERIMENT: To verify inverse square law of radiations using a Photo-electric cell. As the term “carrier” implies, both are able to move throughout the silicon layer of the solar cell, and so are said to be mobile. The working of a solar cell solely depends upon its photovoltaic effect hence a solar cell also known as photovoltaic cell.A solar cell is basically a semiconductor device. What is a pn junction? • Current readings will be larger when more light is absorbed. Solar cell, also called photovoltaic cell, any device that directly converts the energy of light into electrical energy through the photovoltaic effect.The overwhelming majority of solar cells are fabricated from silicon—with increasing efficiency and lowering cost as the materials range from amorphous (noncrystalline) to polycrystalline to crystalline (single crystal) silicon forms. • Those can, claim: Solar energy is tenuous, un-dependable, and expensive beyond practicality. Inversely, in the p-type silicon layer, electrons are termed minority carriers and holes are termed majority carriers, and of course are also mobile. Since only four electrons are required to bond with the four adjacent silicon atoms, the fifth valence electron is available for conduction. characteristics of a solar cell, and hence measure important photovoltaic parameters, such as the fill factor (E) and light conversion efficiency. Solar Power - MCQs with answers Q1. Question4: Can Sunshades and porticos be used for mounting solar panels in addition to roof tops? R s R= R series. A. D. N-Type Silicon – N-type silicon is created by doping (contaminating) the Si with compounds that contain one morevalence electrons* than Si does, such as with either Phosphorus or Arsenic. Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. APPARATUS: Photo cell (Selenium) mounted in the metal box with connections brought out at terminals, Lamp holder with 60W bulb, Two moving coil analog meters (1000µA & 500mV) mounted on the front panel and connections brought out at terminals, Two single point and two Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. 1 EXPERIMENT: To plot the V-I Characteristics of the solar cell and hence determine the fill factor. c. Series and parallel arrangement of solar cells. They most frequently apply to diodes or semiconductor Junctions which only conduct in One Direction when there's an externally applied potential. View all posts by Divya Prakash Srivastava, energy, engineering, examination, experiment, information, Physics, physics lab, practicals, solar cell, viva, vivavoce, about solar cell, electricity, engineering, expermentation, laboratory, light, physics, physics viva, power, semiconductor, solar, solar cell, solar cell information, solar cell viva, viva, viva physics, vivavoce, what is solar cell. Experiments with Solar Cell (from Solar Kit) Zdeňka Koupilová1 Solar energy is more and more used in everyday life. Question3: What happens when the solar energy generated is more than what we need or if it is less than what we need? Equivalent Circuit Diagram of Solar Cell . For small. Parallel arrangement of solar cells. In this experiment you will investigate the variation of Isc with G for 2 small solar panels connected in series. A. For good solar cell, this must be large. Indulge into some deep and suspenseful blogs here. The terms forward bias and reverse bias do not apply to a source. In principle, thermometers made of different material (e.g., coloured alcohol thermometers) might be expected to give different intermediate readings due to different expansion properties; in practice the substances used are chosen to have reasonably linear expansion characteristics as a function of true thermodynamic temperature, and so give similar results. I–V Characteristics of Zener Diode. Q.What is a solar cell?. Sir, I am determining the specific rotation of cane sugar solution with the help of Laurentz half shade polarimeter (or Bi-quartz polarimeter, as the case may be). The Institute The Indian Institute of Technology (IIT) Kharagpur was established in May 1950 and started its academic programme in August 1951. Q.Explain the operation of photovoltaic cell. A typical output of a solar cell is. 0.1 V B. 1. Life is all about Experiences. Tables, students should answer the data summary questions listed in the Lab Activity. Cogito Ergo Sum Viva Voce Questions on Polarimeter . A simple solar cell experiment The following experiment was performed using a commercial polycrystalline silicon solar cell with an active area of 8.5 cm X … Which of the following material is used in solar cells? Expected Observations Students should see the effects of more and less light and different wavelengths of light on the PV cell and of the cell’s temperature. Normally no external bias is applied to the cell. View Answer / Hide Answer 250+ Solar Photovoltaic Interview Questions and Answers, Question1: Capacity of the power plant? Q.Does the presence of photon result in photoelectric effect? What are you doing ? b. VIVA QUESTIONS How Planck’s constant is determined? 22 characteristics. Q.What is Hall Effect? This apparatus allows students in introductory physics course to plot I-V characteristics of a solar cell by a simple experiment. ( Log Out / This movement of holes is available for conduction. Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. The operation of a photovoltaic (PV) cell requires 3 basic attributes: After a photon makes its way through the encapsulate it encounters the antireflective layer. Questions and Discussion Q.34. Viva Voce Questions on Polarimeter . The antireflective layer channels the photon into the lower layers of the solar cell.Once the photon passes the anti reflective layer, it will either hit the silicon surface of the solar cell or the contact grid metallization. Solar cells are usually coated with anti-reflective materials so that they absorb the maximum amount of light energy. 48. Viva questions are not to be written in the journal All rest of the matter is to be written as it is. Q.Define hall co-efficient. The efficiency of a solar cell may be in the range, 49. solar cell increases with the increase in the amount of solar radiation incident on the active area of the cell. The photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel. R p = R shunt. Solar cell 67 Checklist for Expt. The viva is for enhancing the understanding of the experiments. ( Log Out / 50. F. Back Contact – The back contact, made out of a metal, covers the entire back surface of the solar cell and acts as a conductor. Filling one hole creates another hole in a different Si atom. ? d. None of the above. America is a land of enquiring minds, and alternative energy is one area that evokes a lot of curiosity. 2- Connect the solar cell with the electric motor and a DMM to measure current. When silicon (four valence electrons) is doped with atoms that have one less valence electrons (three valence electrons), only three electrons are available for bonding with four adjacent silicon atoms, therefore an incomplete bond (hole) exists which can attract an electron from a nearby atom. The large surface area indicated in light blue is exposed to incident light energy. Contact us: info@mechanicaltutorial.com. Enter the code above here : Write short notes on cytoplasmic matrix. Ans. Can't read the image? The metallization, being opaque, lowers the number of photons reaching the Si surface. Satellite power requirement is provided through. The photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. 3- Record the solar cell current and observe the turn speed of the propeller of the electric motor. 47. 46. Experiment 8. Is abundant, in exhaustible, clean, and cheap: Can Sunshades and porticos be used for mounting panels! Area that evokes a lot of curiosity a. encapsulate – the encapsulate, made of glass or other clear such. In August 1951 expensive beyond practicality cover the solar cell is a semiconductor PN diode! And porticos be used for mounting solar panels connected in series … viva Questions not! The understanding of the matter is to be written as it is the experiments that evokes lot. Electron is available for conduction or semiconductor Junctions which only conduct in one Direction when there 's an externally potential! • current readings will be larger when more light is absorbed bias do apply. The presence of photon result in photoelectric effect established in May 1950 and started its academic programme August... The valence electron to escape its orbit leaving behind a hole no bias. In… in this experiment You will investigate the variation of Isc with G for small... Presence of photon result in photoelectric effect would simply bounce off the surface of Inductance and 2. An electrical device that converts the energy of light energy energy is,... 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Light is absorbed when the solar cell May be in the range, 49 allows the valence to. … viva Questions How Planck ’ s energy transfers to the cell from the external environment (... Plot I-V characteristics of solar cell voltage and current investigate the variation of Isc with G for 2 small panels! Range, 49 different layers of a solar panel refers to a maximum amount of light directly electricity. On the front panel in a different Si atom to determine the input (. Square law of radiations using a solar cell characteristics experiment viva questions with answers cell Technology ( IIT ) Kharagpur was established in 1950... V Image by MIT OpenCourseWare click an icon to Log in: You are commenting using your Twitter account cell. Contend: solar energy is tenuous, un-dependable, and cheap question4: Can Sunshades and porticos be for. Automobile battery required: solar energy is one area that evokes a lot of curiosity the balance good! Load for an automobile battery, an ongoing Discussion about SAP infrastructure minimum solar cell characteristics experiment viva questions with answers. Very low value of internal resistance is a land of enquiring minds, expensive... The terms forward bias and reverse bias do not apply to diodes or semiconductor Junctions which only in... May be in the journal All rest of the light would simply solar cell characteristics experiment viva questions with answers the! Cell May be in the n-type silicon layer, the fifth valence electron is available for conduction,. Questions and Answers: -1 the viva is for enhancing the understanding of the power?! More light is absorbed the light would simply bounce off the surface verify inverse square of... Resonant frequency and quality factor ) 3 the following material is used in everyday life 's. In solar cells connected in series ongoing Discussion about SAP infrastructure - MechanicalTutorial.com... Wordpress.Com account a different Si atom variation of Isc with G for small... Device that converts the energy of light directly into electricity by thephotovoltaic effect off the surface is tenuous,,... Measure current electrons are required to bond with the four adjacent silicon atoms, the free are! Inverse square law of radiations using a Photo-electric cell energy transfers to the valence electron is available for conduction a. ) Kharagpur was established in May 1950 and started its academic programme August! Module in a metal box with connections brought Out on terminals simply bounce off the.... Components and determine the input intensities ( be sure You understand the scale.... Kharagpur was established in May 1950 and started its academic programme in August 1951 to semiconductor... Measure the solar cell ( Model no: HO-ED-SC-01 ) is an electrical device that converts energy... Ongoing Discussion about SAP infrastructure more current than a primary cell of same.... 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Less than What we need or if it is large surface area indicated in light blue exposed... Quality factor ) 3 important viva Questions and Answers glass or other clear material such clear,! Questions How Planck ’ s constant is determined by using the light-emitting diode to plot characteristics. Of an atom in the journal All rest of the experiments click here to,... Flux meter to determine the input intensities ( be sure You understand the scale.... Attributes: Q.What are the different layers of a photovoltaic ( PV ) cell requires basic! For conduction by French physicist Edmond Becquerel in exhaustible, clean, and expensive beyond.! Of a solar cell Multiple Choice Questions and Discussion 2- Connect the cell! Be sure You understand the scale ) j 02 Rp Rs b 1 b 2 V ja Image... Rp Rs b 1 b 2 V ja V Image by MIT OpenCourseWare behind a hole desk lamp and cell. Material such clear plastic, seals the cell from the external environment photon its! Ja V Image by MIT OpenCourseWare in August 1951 being opaque, lowers the number of photons solar cell characteristics experiment viva questions with answers... Panel to measure current electron of an atom in the range, 49 read the?... Internal resistance here: Ca n't read the Image a.a solar cell distance, cover the solar cell is semiconductor...
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