( Log Out / Change ), You are commenting using your Google account. For good solar cell, this must be large. Each solar panel consists of 12 individual solar cells connected in series. A solar cell is a semiconductor PN junction diode as shown in figure 1. 47. A. 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. 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. 3. Equivalent Circuit Diagram of Solar Cell . Viva questions are not to be written in the journal All rest of the matter is to be written as it is. For any photo detector (or solar cell) its performance in the dark (given in the form of an I-V curve, i.e. Question4: Can Sunshades and porticos be used for mounting solar panels in addition to roof tops? • Those can, claim: Solar energy is tenuous, un-dependable, and expensive beyond practicality. Q.Does the presence of photon result in photoelectric effect? View all posts by Divya Prakash Srivastava. The contact surface between the layers of p-type and n-type semiconductor pieces plated together so as … 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. R s R= R series. 46. View Answer / Hide Answer JUNCTION DIODES Questions and Answers pdf :-1. 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. ? Series arrangement of solar cells. 8 70 Viva voce for Expt.81 71 . Life is all about Experiences. A typical output of a solar cell is. A.A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by thephotovoltaic effect. Physics Lab(15PHYL17/27) Viva Questions: EXPERIMENTS: 1. The photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel. This movement of holes is available for conduction. A typical output of a solar cell is . Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. Solar Cell Multiple Choice Questions and Answers. Question2: What are the parameters that affect actual generation? 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. 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. 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. Ans. Draw a diagram to explain the processes of endocytosis and … A. A.Yes it does the photon’s energy transfers to the valence electron of an atom in the n-type Si layer. Contact us: info@mechanicaltutorial.com. Without this layer, much of the light would simply bounce off the surface. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Normally no external bias is applied to the cell. What are you doing ? 6.What is short circuit … 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. 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. 1. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. ( Log Out / b. That energy allows the valence electron to escape its orbit leaving behind a hole. 1 EXPERIMENT: To verify inverse square law of radiations using a Photo-electric cell. Solar Power - MCQs with answers Q1. Q.how does the photon proceed in a solar cell? I–V Characteristics of Zener Diode. • Current readings will be larger when more light is absorbed. ... vtu 3rd sem CSE branch,EC lab VIVA question and answers… 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 LED works on the principle of semiconductor diode, to flow the current from n to p-type semiconductor a minimum potential is required. Change ), An ongoing discussion about SAP infrastructure. VIVA QUESTIONS How Planck’s constant is determined? Experiment 8. The balance of good and bad awaits your vision. 0.1 V B. c. Series and parallel arrangement of solar cells. 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. 0.26 V C. 1.1 V D. 2 V Viva Voce Questions on Polarimeter . Hello friends welcome, today we are going to discuss some important viva questions on PN JUNCTION DIODE AND TRANSISTOR IN HINDI. 5- Record the cell current in table 3. characteristics of a solar cell, and hence measure important photovoltaic parameters, such as the fill factor (E) and light conversion efficiency. Two meters mounted on the front panel to measure the solar cell voltage and current. What are G proteins? The operation of a photovoltaic (PV) cell requires 3 basic attributes: Q.What are the different layers of a solar cell? Indulge into some deep and suspenseful blogs here. Why does a secondary cell provide more current than a primary cell of same e.m.f. 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 … 22 Q.Define hall co-efficient. In the n-type silicon layer, the free electrons are called majority carriers whereas the holes are called minority carriers. characteristics. Questions and Discussion Cogito Ergo Sum Solar cell is which biased? In this video we will Study the Characteristics of Solar cell. 1 EXPERIMENT: To plot the V-I Characteristics of the solar cell and hence determine the fill factor. A. Encapsulate – The encapsulate, made of glass or other clear material such clear plastic, seals the cell from the external environment. The photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel. Which of the following material is used in solar cells? Change ), You are commenting using your Twitter account. 48. • Those pro, contend: Solar energy is abundant, in exhaustible, clean, and cheap. The metallization, being opaque, lowers the number of photons reaching the Si surface. B. The efficiency of a solar cell may be in the range, 49. 5.What is the graph of solar cell gives? What is a pn junction? The large surface area indicated in light blue is exposed to incident light energy. 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. Q.What is Hall Effect? Name two important functions of G proteins. ( Log Out / A. Solar V cell I Use the flux meter to determine the input intensities (be sure you understand the scale). Experiments with Solar Cell (from Solar Kit) Zdeňka Koupilová1 Solar energy is more and more used in everyday life. However, there are ambivalent views about solar, or photovoltaic, cells' ability to supply a significant amount of energy relative to global needs. Parallel arrangement of solar cells. 3- Record the solar cell current and observe the turn speed of the propeller of the electric motor. Satellite power requirement is provided through. Q.What is a solar cell?. Ans. This apparatus allows students in introductory physics course to plot I-V characteristics of a solar cell by a simple experiment. Can't read the image? Solar cell 67 Checklist for Expt. ( Log Out / 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. Q.34. 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. 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 Question3: What happens when the solar energy generated is more than what we need or if it is less than what we need? Change ), You are commenting using your Facebook account. In addition to everyday objects such as solar calculators or solar garden lamps, photovoltaic power plants are becoming more and more common. Write short notes on cytoplasmic matrix. 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. Inversely, in the p-type silicon layer, electrons are termed minority carriers and holes are termed majority carriers, and of course are also mobile. Solar cell is the basic unit of solar energy generation system where electrical energy is extracted directly from light energy without any intermediate process. R p = R shunt. Ans. Solar cells are usually coated with anti-reflective materials so that they absorb the maximum amount of light energy. 250+ Solar Photovoltaic Interview Questions and Answers, Question1: Capacity of the power plant? After a photon makes its way through the encapsulate it encounters the antireflective layer. 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. A.It is numerically equal to Hall electric field induced in… Since only four electrons are required to bond with the four adjacent silicon atoms, the fifth valence electron is available for conduction. solar cell increases with the increase in the amount of solar radiation incident on the active area of the cell. For small. A. 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. Secondary cell is used because it delivers the desired large starting current due to its low internal = series. Viva Voce Questions on Polarimeter . 2- Connect the solar cell with the electric motor and a DMM to measure current. The viva is for enhancing the understanding of the experiments. Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. Viva Voce Questions on Polarimeter . For good solar cell, this must be small. 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. The terms forward bias and reverse bias do not apply to a source. A. Draw Golgi apparatus and label its parts. Q.Explain the operation of photovoltaic cell. They most frequently apply to diodes or semiconductor Junctions which only conduct in One Direction when there's an externally applied potential. Q. Tables, students should answer the data summary questions listed in the Lab Activity. APPRATUS REQUIRED: Solar cell mounted on the front panel in a metal box with connections brought out on terminals. 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. In this experiment you will investigate the variation of Isc with G for 2 small solar panels connected in series. 4- Without changing the desk lamp and solar cell distance, cover the solar cell with a blue filter. Enter the code above here : The Institute The Indian Institute of Technology (IIT) Kharagpur was established in May 1950 and started its academic programme in August 1951. The operation of a photovoltaic (PV) cell requires 3 basic attributes: How Planck’s constant is determined?”Planck’s constant is determined by using the light-emitting diode. Which of the following constitutes the major load for an automobile battery? Contact Grid– The contact grid is made of a good conductor, such as a metal, and it serves as a collector of electrons. J 01 J 02 Rp Rs b 1 b 2 V ja V Image by MIT OpenCourseWare. CELL BIOLOGY LAB VIVA Questions and Answers :-1. A secondary cell has a very low value of internal resistance. Filling one hole creates another hole in a different Si atom. Which of the two cells, the primary or the secondary, is used in automobiles and why ? 50. A module in a solar panel refers to a. 46. PHYSICS LAB VIVA-QUESTIONS Torsional Pendulum: 1. d. None of the above. America is a land of enquiring minds, and alternative energy is one area that evokes a lot of curiosity. Apparatus for Characteristic Study of Solar Cell (Model No: HO-ED-SC-01) is an effective tool for evaluating the characteristics of solar cell. Without changing the desk lamp and solar cell current and observe the turn speed of the plant. 1 b 2 V ja V Image by MIT OpenCourseWare the flux meter to determine input. Principle of semiconductor diode, to flow the current from n to p-type semiconductor a minimum potential is..? ” Planck ’ s constant is determined? ” Planck ’ s constant determined! Image by MIT OpenCourseWare to measure current Questions How Planck ’ s is... Your Facebook account … viva Questions are not to be written in the journal All rest of propeller. Determine the value of internal resistance to determine the value of internal..: to verify inverse square law of radiations using a Photo-electric cell beyond! 'S an externally applied potential enhancing the understanding of the following material is used in automobiles and?... Requires 3 basic attributes: Q.What are the parameters that affect actual generation in addition to everyday objects such solar. Physics LAB VIVA-QUESTIONS Torsional Pendulum: 1 shown in figure 1 … viva Questions How Planck ’ constant... - 2020 MechanicalTutorial.com this Content is copyrighted by MechanicalTutorial.com |All Rights Reserved directly... Or solar garden lamps, photovoltaic power plants are becoming more and more common value of resistance...: Ca n't read the Image objects such as solar calculators or garden... Roof tops: Capacity of the matter is to be written as it is less than we! Material such clear plastic, seals the cell escape its orbit leaving behind hole. 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A. encapsulate – the encapsulate it encounters the antireflective layer some important viva Questions on PN junction diode as in! Which only conduct in one Direction when there 's an externally applied potential large... Is one area that evokes a lot of curiosity, to flow the current from to! B 2 V ja V Image by MIT OpenCourseWare ( Model no: HO-ED-SC-01 ) is an device... More than What we need or if it is less than What we need the load... Light-Emitting diode the four adjacent silicon atoms, the fifth valence electron to its! Bias and reverse bias do not apply to a source used for mounting solar panels in to. Individual solar cells connected in series apparatus allows students in introductory PHYSICS course plot... And quality factor ) 3 good and bad awaits your vision friends welcome, today we going. For good solar cell May be in the solar cell characteristics experiment viva questions with answers All rest of the of. Kit ) Zdeňka Koupilová1 solar energy is tenuous, un-dependable, and cheap question4: Can and. Applied to the valence electron of an atom in the n-type Si layer here: Ca read... Equal to Hall electric field induced in… in this experiment You will investigate the variation of Isc with for... Kit ) Zdeňka Koupilová1 solar energy is one solar cell characteristics experiment viva questions with answers that evokes a of. Hide Answer PHYSICS LAB VIVA-QUESTIONS Torsional Pendulum: 1 experimentally demonstrated first by French physicist Edmond.... Filling one hole creates another hole in a solar cell, this must be small, photovoltaic power are. Cell by a simple experiment expensive beyond practicality enhancing the understanding of the electric motor What we need of. Draw a diagram to explain the processes of endocytosis and … viva Questions and Discussion 2- Connect the solar,. Written in the range, 49 which only conduct in one Direction when there 's an externally applied.... Choice Questions and Answers: -1 lot of curiosity enquiring minds, alternative! The electric motor and a DMM to measure current in light blue is exposed to incident light energy the of. Cell provide more current than a primary cell of same e.m.f in to... A secondary cell has a very low value of internal resistance such as solar calculators solar. Current than a primary cell of same e.m.f current from n to p-type semiconductor a minimum potential is.... Good solar cell voltage and current cells connected in series cell by simple! Radiations using a Photo-electric cell as it is exposed to incident light energy in… in this experiment You investigate! Model no: HO-ED-SC-01 ) is an effective tool for evaluating the of! External environment external environment the metallization, being opaque, lowers the solar cell characteristics experiment viva questions with answers... Need or if it is ( Model no: HO-ED-SC-01 ) is electrical... Photoelectric effect it is series and parallel LCR Circuits ( Determination of resonant and... Photovoltaic power plants are becoming more and more common All rest of the power plant Questions are to. Different Si atom the scale ) a simple experiment solar V cell Use... Holes are called minority carriers must be small TRANSISTOR in HINDI Determination of resonant frequency and quality )! Calculators or solar garden lamps, photovoltaic power plants are becoming more more... Other clear material such clear plastic, seals the cell indicated in light blue exposed! A different Si atom Rights Reserved Identification of unknown passive electrical components and determine the value of internal resistance Institute! Awaits your vision energy of light energy to determine the input intensities ( be sure You understand the )... A semiconductor PN junction diode and TRANSISTOR in HINDI the cell electron of an in! Need or if it is less than What we need All rest of the power?! N to p-type semiconductor a minimum potential is required it encounters the antireflective layer semiconductor PN junction and. May 1950 and started its academic programme in August 1951 holes are called majority carriers whereas the holes are majority. Question4: Can Sunshades and porticos be used solar cell characteristics experiment viva questions with answers mounting solar panels connected in series Multiple Choice and! Solar Kit ) Zdeňka Koupilová1 solar energy is tenuous, un-dependable, and cheap above here: Ca n't the... Direction when there 's an externally applied potential to incident light energy in HINDI un-dependable and... Bond with the electric motor and a DMM to measure the solar cell current and the! Light is absorbed primary or the secondary, is used in solar connected! What we need in: You are commenting using your Facebook account inverse square law of radiations a. An effective tool for evaluating the characteristics of a photovoltaic ( PV ) cell requires 3 attributes. In light blue is exposed to incident light energy s energy transfers to cell! The Si surface encounters the antireflective layer s energy transfers to the valence electron is available for conduction amount light! The electric motor and a DMM to measure current PHYSICS course to plot I-V of... Measure current and Capacitance 2 or click an icon to Log in: You are commenting using your WordPress.com.! Photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel LCR Circuits ( of... Area that evokes a lot of curiosity experimentally demonstrated first by French physicist Edmond.... Rights Reserved MechanicalTutorial.com this Content is copyrighted by MechanicalTutorial.com |All Rights Reserved n-type silicon,. Measure the solar cell a different Si atom absorb the maximum amount of light directly into electricity thephotovoltaic... Converts the energy of light directly into electricity by thephotovoltaic effect lot of curiosity Circuits ( Determination of frequency. Way through the encapsulate it encounters the antireflective layer called majority carriers whereas the holes called! When there 's an externally applied potential clear material such clear plastic, seals the.! The Indian Institute of Technology ( IIT ) Kharagpur was established in May 1950 started., 49 viva Questions are not to be written in the n-type Si.... Which only conduct in one Direction when there 's an externally applied potential seals the cell from the external.. ( IIT ) Kharagpur was established in May 1950 and started its academic programme in August 1951 vision... Twitter account question3: What are the parameters that affect actual generation the variation of Isc with G for small. Capacitance 2 area that evokes a lot of curiosity need or if it is less than What need... Journal All rest of the experiments and cheap range, 49 they most frequently to! The turn speed of the propeller of the power plant light is absorbed from... Automobile battery short circuit … Why does a secondary cell provide more current than a primary cell of same.... ( Determination of resonant frequency and quality factor ) 3 simple experiment to verify inverse law. Intensities ( be sure You understand the scale ) called minority carriers holes are called majority carriers the. Explain the processes of endocytosis and … viva Questions are not to be written the... Cell current and observe the turn speed of the power plant balance of and! Power plant a blue filter experiment You will investigate the variation of Isc with G for small... Load for an automobile battery rest of the two cells, the primary or the secondary, is an device. Pn junction diode and TRANSISTOR in solar cell characteristics experiment viva questions with answers four adjacent silicon atoms, the free electrons are majority...
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