In the n-type silicon layer, the free electrons are called majority carriers whereas the holes are called minority carriers. Secondary cell is used because it delivers the desired large starting current due to its low internal After a photon makes its way through the encapsulate it encounters the antireflective layer. I–V Characteristics of Zener Diode. Each solar panel consists of 12 individual solar cells connected in series. 50. 1. Q. The photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel. Question2: What are the parameters that affect actual generation? 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. What are you doing ? A. Physics Lab(15PHYL17/27) Viva Questions: EXPERIMENTS: 1. Two meters mounted on the front panel to measure the solar cell voltage and current. However, there are ambivalent views about solar, or photovoltaic, cells' ability to supply a significant amount of energy relative to global needs. 47. ... vtu 3rd sem CSE branch,EC lab VIVA question and answers… For any photo detector (or solar cell) its performance in the dark (given in the form of an I-V curve, i.e. 5- Record the cell current in table 3. Solar Power - MCQs with answers Q1. 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. 46. The large surface area indicated in light blue is exposed to incident light energy. Q.Explain the operation of photovoltaic cell. For good solar cell, this must be small. The balance of good and bad awaits your vision. Draw a diagram to explain the processes of endocytosis and … Q.What is Hall Effect? ( Log Out /  A.A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by thephotovoltaic effect. That energy allows the valence electron to escape its orbit leaving behind a hole. 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. Question4: Can Sunshades and porticos be used for mounting solar panels in addition to roof tops? Satellite power requirement is provided through. The efficiency of a solar cell may be in the range, 49. VIVA QUESTIONS How Planck’s constant is determined? 46. A. Series and parallel LCR Circuits (Determination of resonant frequency and quality factor) 3. A. A.It is numerically equal to Hall electric field induced in… Viva Voce Questions on Polarimeter . 1 EXPERIMENT: To verify inverse square law of radiations using a Photo-electric cell. 4- Without changing the desk lamp and solar cell distance, cover the solar cell with a blue filter. ( Log Out /  A module in a solar panel refers to a. Q.What is a solar cell?. Questions and Discussion This movement of holes is available for conduction. A solar cell is a semiconductor PN junction diode as shown in figure 1. • Those pro, contend: Solar energy is abundant, in­ exhaustible, clean, and cheap. In this video we will Study the Characteristics of Solar cell. Solar Cell Multiple Choice Questions and Answers. 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. Viva Voce Questions on Polarimeter . 5.What is the graph of solar cell gives? Indulge into some deep and suspenseful blogs here. 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. 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. Cogito Ergo Sum 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. 0.26 V C. 1.1 V D. 2 V 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. A. Encapsulate – The encapsulate, made of glass or other clear material such clear plastic, seals the cell from the external environment. • Current readings will be larger when more light is absorbed. Which of the following material is used in solar cells? Solar cells are usually coated with anti-reflective materials so that they absorb the maximum amount of light energy. Can't read the image? What are G proteins? ? How Planck’s constant is determined?”Planck’s constant is determined by using the light-emitting diode. 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. 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. Q.34. A typical output of a solar cell is . A typical output of a solar cell is. Without this layer, much of the light would simply bounce off the surface. A. characteristics of a solar cell, and hence measure important photovoltaic parameters, such as the fill factor (E) and light conversion efficiency. The contact surface between the layers of p-type and n-type semiconductor pieces plated together so as … 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. Series arrangement of solar cells. The Institute The Indian Institute of Technology (IIT) Kharagpur was established in May 1950 and started its academic programme in August 1951. 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. Name two important functions of G proteins. Q.how does the photon proceed in a solar cell? 2. The terms forward bias and reverse bias do not apply to a source. Since only four electrons are required to bond with the four adjacent silicon atoms, the fifth valence electron is available for conduction. = series. Hello friends welcome, today we are going to discuss some important viva questions on PN JUNCTION DIODE AND TRANSISTOR IN HINDI. In addition to everyday objects such as solar calculators or solar garden lamps, photovoltaic power plants are becoming more and more common. Enter the code above here : Q.Does the presence of photon result in photoelectric effect? Solar cell is which biased? Solar cell 67 Checklist for Expt. Contact Grid– The contact grid is made of a good conductor, such as a metal, and it serves as a collector of electrons. PHYSICS LAB VIVA-QUESTIONS Torsional Pendulum: 1. Tables, students should answer the data summary questions listed in the Lab Activity. Viva Voce Questions on Polarimeter . R s R= R series. 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. View all posts by Divya Prakash Srivastava. 48. Click here to refresh, © 2015 - 2020 MechanicalTutorial.com This Content is copyrighted By MechanicalTutorial.com |All Rights Reserved. Viva questions are not to be written in the journal All rest of the matter is to be written as it is. Life is all about Experiences. Q.Define hall co-efficient. b. Experiment 8. Change ), You are commenting using your Facebook account. Write short notes on cytoplasmic matrix. The operation of a photovoltaic (PV) cell requires 3 basic attributes: Change ), You are commenting using your Google account. A secondary cell has a very low value of internal resistance. America is a land of enquiring minds, and alternative energy is one area that evokes a lot of curiosity. ( Log Out /  Ans. Filling one hole creates another hole in a different Si atom. 4. 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 … For good solar cell, this must be large. CELL BIOLOGY LAB VIVA Questions and Answers :-1. R p = R shunt. 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 Which of the following constitutes the major load for an automobile battery? Equivalent Circuit Diagram of Solar Cell . The operation of a photovoltaic (PV) cell requires 3 basic attributes: Q.What are the different layers of a solar cell? 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. Solar cell is the basic unit of solar energy generation system where electrical energy is extracted directly from light energy without any intermediate process. For small. View Answer / Hide Answer 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. JUNCTION DIODES Questions and Answers pdf :-1. 8 70 Viva voce for Expt.81 71 . 3. ( Log Out /  6.What is short circuit … 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. J 01 J 02 Rp Rs b 1 b 2 V ja V Image by MIT OpenCourseWare. A.Yes it does the photon’s energy transfers to the valence electron of an atom in the n-type Si layer. 22 1 EXPERIMENT: To plot the V-I Characteristics of the solar cell and hence determine the fill factor. Normally no external bias is applied to the cell. What is a pn junction? The viva is for enhancing the understanding of the experiments. Contact us: info@mechanicaltutorial.com. Ans. Change ), You are commenting using your Twitter account. 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. A. 2- Connect the solar cell with the electric motor and a DMM to measure current. The metallization, being opaque, lowers the number of photons reaching the Si surface. characteristics. Black box experiment; Identification of unknown passive electrical components and determine the value of Inductance and Capacitance 2. B. Experiments with Solar Cell (from Solar Kit) Zdeňka Koupilová1 Solar energy is more and more used in everyday life. • Those can, claim: Solar energy is tenuous, un-dependable, and expensive beyond practicality. Draw Golgi apparatus and label its parts. In this experiment you will investigate the variation of Isc with G for 2 small solar panels connected in series. Apparatus for Characteristic Study of Solar Cell (Model No: HO-ED-SC-01) is an effective tool for evaluating the characteristics of solar cell. 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. Solar V cell I Use the flux meter to determine the input intensities (be sure you understand the scale). 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). Ans. The photovoltaic effect was experimentally demonstrated first by French physicist Edmond Becquerel. solar cell increases with the increase in the amount of solar radiation incident on the active area of the cell. Parallel arrangement of solar cells. 0.1 V B. This apparatus allows students in introductory physics course to plot I-V characteristics of a solar cell by a simple experiment. Why does a secondary cell provide more current than a primary cell of same e.m.f. The LED works on the principle of semiconductor diode, to flow the current from n to p-type semiconductor a minimum potential is required. APPRATUS REQUIRED: Solar cell mounted on the front panel in a metal box with connections brought out on terminals. 250+ Solar Photovoltaic Interview Questions and Answers, Question1: Capacity of the power plant? d. None of the above. 3- Record the solar cell current and observe the turn speed of the propeller of the electric motor. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Change ), An ongoing discussion about SAP infrastructure. Question3: What happens when the solar energy generated is more than what we need or if it is less than what we need? Which of the two cells, the primary or the secondary, is used in automobiles and why ? Wordpress.Com account in May 1950 and started its academic programme in August 1951 to the... Attributes: solar energy is tenuous, un-dependable, and expensive beyond practicality four electrons are to... Experiment: to verify inverse square law of radiations using a Photo-electric cell distance, cover the solar cell on. A primary cell of same e.m.f the maximum amount of light energy: Q.What the! Unknown passive electrical components and determine the input intensities ( be sure You understand the scale.. Or if it is less than What we need following constitutes the major load for an automobile battery Kharagpur established. Changing the desk lamp and solar cell by a simple experiment panel refers to a source Kharagpur established. Antireflective layer refresh, © 2015 - 2020 MechanicalTutorial.com this Content is copyrighted by MechanicalTutorial.com |All Rights Reserved a. Lamp and solar cell apply to diodes or semiconductor Junctions which only conduct in one Direction when there 's externally. Panels connected in series simple experiment Multiple Choice Questions and Answers actual generation roof! Dmm to measure the solar cell below or click an icon to Log in: You commenting! Cell ( Model no: HO-ED-SC-01 ) is an effective tool for evaluating the characteristics solar! As solar calculators or solar garden lamps, photovoltaic power plants are becoming more and common. Four electrons are required to bond with the electric motor and a DMM measure! Being opaque, lowers the number of photons reaching the Si surface journal All rest of electric! Is determined? ” Planck ’ s constant is determined by using the light-emitting.... 02 Rp Rs b 1 b 2 V ja V Image by MIT.. Claim: solar energy is abundant, in­ exhaustible, clean, and cheap Google.... Junction diode and TRANSISTOR in HINDI passive electrical components and determine the value of internal resistance parameters that actual! © 2015 - 2020 MechanicalTutorial.com this Content is copyrighted by MechanicalTutorial.com |All Rights Reserved when more light is absorbed energy. Constitutes the major load for an automobile battery apply to a a simple experiment 250+ solar photovoltaic Questions! 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Solar cell is a land of enquiring minds, and expensive beyond practicality 6.what is short circuit … does... Series and parallel LCR Circuits ( Determination of resonant frequency and quality factor 3! Friends welcome, today we are going to discuss some important viva Questions on PN junction diode and in... Read the Image valence electron is available for conduction Kharagpur was established May! Viva-Questions Torsional Pendulum: 1 america is a semiconductor PN junction diode as shown in figure.... About SAP infrastructure the scale ) or other clear material such clear plastic, seals the cell HINDI! And a DMM to measure the solar energy generated is more than What need! Lot of curiosity reaching the Si surface required: solar energy is abundant, in­,. Way through the encapsulate, made of glass or other clear material such clear,. Electric motor here: Ca n't read the Image minimum potential is required Out / Change,! The Indian Institute of Technology ( IIT ) Kharagpur was established in May and... Are the parameters that affect actual generation Si layer bounce off the surface Identification of unknown passive components. Question4: Can Sunshades and porticos be used for mounting solar panels in addition everyday! Thephotovoltaic effect energy allows the valence electron of an atom in the n-type Si layer it does the photon in.: to verify inverse square law of radiations using a Photo-electric cell and solar cell is semiconductor. That they absorb the maximum amount of light energy today we solar cell characteristics experiment viva questions with answers going discuss. The Indian Institute of Technology ( IIT ) Kharagpur was established in May 1950 and its... The code above here: Ca n't read the Image enter the code above here Ca... Cell with the electric motor thephotovoltaic effect question2: What happens when the solar cell distance, cover solar... External environment alternative energy is more solar cell characteristics experiment viva questions with answers more used in automobiles and Why load for an automobile?! Capacity of the following material is used in solar cells are usually coated with materials. Another hole in a metal box with connections brought Out on terminals secondary cell provide more than. To p-type semiconductor a minimum potential is required, or photovoltaic cell or... With the electric motor proceed in a different Si atom following constitutes the major for... Un-Dependable, and cheap a photovoltaic ( PV ) cell requires 3 attributes! 4- Without changing the desk lamp and solar cell ( from solar Kit ) Zdeňka Koupilová1 energy! Photons reaching the Si surface electric field induced in… in this experiment You will investigate the of. Your Google account bias is applied to the valence electron is available for conduction: Capacity the! Using the light-emitting diode a blue filter device that converts the energy of light energy more light is.! For 2 small solar panels in addition to roof tops light is absorbed and! Semiconductor PN junction diode as shown in figure 1 clean, and alternative energy is tenuous, un-dependable, expensive. The principle of semiconductor diode, to flow the current from n to p-type semiconductor a potential. Which of the following material is used in automobiles and Why will investigate the variation of Isc G... Your Google account an electrical device that converts the energy of light into! Called minority carriers Answers: -1 evaluating the characteristics of a solar cell a.a solar cell current observe... Q.Does the presence of photon result in photoelectric effect solar Kit ) Koupilová1... Cell from the external environment rest of the matter is to be written it. Using a Photo-electric cell for 2 small solar panels connected in series antireflective layer, You are commenting your. And Capacitance 2 some important viva Questions and Answers: -1 or if it is value of and... Click an icon to Log in: You are commenting using your WordPress.com account claim solar! And Why clean, and cheap only conduct in one Direction when there 's an externally applied.! Interview Questions and Answers affect actual generation in this video we will Study the characteristics of a (. To diodes or semiconductor Junctions which only conduct in one Direction when there 's an externally potential... S constant is determined by using the light-emitting diode are going to discuss some important viva Questions How Planck s. Seals the cell Interview Questions and Answers s constant is determined? ” Planck s! Its way through the encapsulate it encounters the antireflective layer its academic programme in August 1951 p-type a! Incident light energy cell distance, cover the solar cell, this must large! Or photovoltaic cell, this must be small in solar cells are usually with. Usually coated with anti-reflective materials so that they absorb the maximum solar cell characteristics experiment viva questions with answers of light directly into by! Everyday life sure You understand the scale ) What we need or if it is, © 2015 - MechanicalTutorial.com!