Solar Energy Questions and Answers March 1, 2021 By admin This article lists 100 Solar Energy MCQs for engineering students. All the Solar Energy Questions & Answers given below includes solution and where possible link to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Solar Energy topic which is core in Electronics & Electrical Engineering. In solar energy, the word solar denotes sun whereas energy means the energy of the sun. The sun is the ultimate source of energy for human beings which emits indirectly visible radiation light energy, infrared radiations, heat energy, and a very small amount of ultraviolet radiation. The infrared radiations and the visible radiations are collectively known as solar energy. The earth receives solar energy directly from the sunlight. We are getting solar energy using some scientific techniques. The solar panels or photovoltaic panels convert sunlight directly into electric current. The main disadvantage of solar panels is, at night time it doesn’t work and the cost of installation is very high. The main advantages of solar energy are reliability, predictability, uninterruptible, low maintenance, free of cost, no pollution, and performance is good. We can use solar energy directly to heat the water, lighting, cooking, passive heating, to charge the portable devices, attic ventilation, inverter and cooling. 1). The Zenith Angle complement is ________ Surface Azimuth Angle Slope Solar Altitude Angle Solar Azimuth Angle Hint 2). Which Meter is used to measure the Beam Radiations ________ Pyrheliometer Sunshine Recorder Anemometer All of the above Hint 3). How many types of solar cells? One Two Three Four Hint 4). In which collector the efficiency is maximum ________ Flat Plate Line Focusing Evacuated Tube Paraboloid Dish Hint 5). The solar cell efficiency is about ________ 25% 15% 48% 63% Hint 6). The source of energy used for satellites is __________ Solar Cells Edison Cells Fuel Cells Cryogenic Cells Hint 7). The Pyranometer measures _________ Direct Radiation Diffusion Radiation Both a and b None of the above Hint 8). The single solar cell voltage is about _______ 0.2 V 0.5 V 1.0 V 2.0 V Hint 9). The solar heater function is to convert the solar energy in to ________ Radiation Electrical Energy Thermal Energy None of the above Hint 10). The solar heater life span is around _________ 4-5 years 2-6 years 1-2 years 6-7 years Hint 11). The radiation of solar includes ____________ Ultraviolet light and Visible light Radio waves and Infrared waves X rays and Gamma rays All of the above Hint 12). Which cell is used to converts solar energy directly into electrical energy ________ Dry cell Photoelectric cell Battery None of the above Hint 13). Which of the following is the most dangerous type of radiation ________ Alpha radiation Beta radiation Gamma radiation None of the above Hint 14). The energy which is stored as latent heat is called as _______ energy Mechanical energy Electrical energy Thermal energy None of the above Hint 15). The solar energy directly used for ______ Drying Water heating Distillation All of the above Hint 16). The nuclear radiation unit is ______ Pascal Rankine Reaumur Roentgen Hint 17). The standard form of HHW is __________ High level waste Low level waste High and low level waste None of the above Hint 18). _________ radiation is called as a diffuse radiation Scattered solar radiation Beam radiation Infrared radiation None of the above Hint 19). Which type of radiation reaches the surface without absorption or without scattering? Scattered solar radiation Infrared radiation Beam radiation None of the above Hint 20). From the sun the solar energy is radiated in the form of ___________ waves Electromagnetic waves Infrared waves Transverse waves None of the above Hint 21). The less insolation occurs when the sun is ________ At night Low in the sky High in the sky None of the above Hint 22). In solar cells _________ material is used Copper Silver Silicon None of the above Hint 23). The range of solar cell efficiency is 5-10% 10-15% 15-20% None of the above Hint 24). In aircrafts _____________ batteries are used Alkaline battery Aluminium-ion battery Nickel-iron battery None of the above Hint Solar Energy Interview Questions 25). The sun emits ______________ radiations Infrared Visible Small amount of ultraviolet All of the above Hint 26). Visible radiations gives ______________ energy Light energy Heat energy Both a and b None of the above Hint 27). Infrared radiations gives ______________ energy Light energy Heat energy Both a and b None of the above Hint 28). The Infrared radiations, visible radiations and small amount of ultraviolet radiations are collectively known as ______________ energy Light energy Heat energy Solar energy None of the above Hint 29). In how many ways we can harness solar energy? One-way Two ways Three ways Four ways Hint 30). Plants convert solar energy into ____________ energy Chemical energy Light energy Heat energy None of the above Hint 31). The solar constant also called as ____________ Solar intensity Solar irradiance Both a and b None of the above Hint 32). The formula of solar constant is ________ S= (R/r).σT2 S = (R/r)2. σT4 S = (R/r2).ΣT2 None of the above Hint 33). The solar cell has __________ One generation Two generations Three generations Four generations Hint 34). What is the S.I unit of the solar constant? S.I unit= W2/m2 S.I unit= Wm2 S.I unit= W/m2 None of the above Hint 35). What is the solar constant value? S = 1.4*103 W/m2 S = 1.4*102 W/m2 S = 1.4*104 W/m2 None of the above Hint 36). The formula of the surface temperature of the sun is ________ T= (R/r)2 (s/σ) T4= (R/r)2 (s/σ) T2= (R/r)2 (s/σ) None of the above Hint 37). What are the non-renewable energy sources of energy? Energy from wind, sun Energy from flowing water, ocean waves Fossil fuels such as coal, petroleum Both a and b Hint 38). Solar energy can leads to generate the electricity through ______ Heat engines Photovoltaics Heat engines and Photovoltaics None of the above Hint 39). The solar energy is essentially useful in _________ contexts Solar thermal Solar photovoltaics Solar thermal and Solar photovoltaics None of the above Hint 40). The high temperature in the concentrating solar technologies divided into how many parts? One Two Three Four Hint 41). Choose the odd one out Coal Petroleum Oil Biomass Hint 42). What are the drawbacks of the solar cooker? Doesn’t work at night Solar cooker takes more time to cook the food Both a and b None of the above Hint 43). How many layers do solar cells consist of? One layer Two layers Three layers Four layers Hint 44). What are the advantages of the solar cells? Maintenance is very low No pollution Maintenance is very high Both a and b Hint 45). What are the drawbacks of using solar cells? Very expensive Efficiency is low Wire which is used for connections is made up of silver material All of the above Hint 46). What is the importance of solar energy? Environmental friendly Saves your money Low Maintenance and diverse applications All of the above Hint 47). What are the different methods of solar energy utilizations? Direct method Indirect method Both a and b None of the above Hint 48). The direct method of solar energy utilization can be classified into ______? Solar thermal Solar photovoltaic Solar thermal and solar photovoltaic None of the above Hint Renewable Energy Questions and Answers 49). __________ comes under the indirect method of solar energy utilization Water power, wind, wave energy Marine currents, OTEC Biomass All of the above Hint 50). The efficiency achieved from solar thermal energy is almost __________ 20-45% 10-40% 15-30% None of the above Hint 51). The medium temperature in the concentrating solar technologies divided into how many parts? One Two Three Four Hint 52). The thin bottom layer of the semiconductor in the solar cell is also called as _______ P - type N - type PNP - type All of the above Hint 53). The concentrating solar technologies divided into how many parts? One Two Three Four Hint 54). The low temperature in the concentrating solar technologies divided into how many parts? One Two Three Four Hint 55). The efficiency achieved from photovoltaic is almost __________ 20-45% 20-40% 19-24% None of the above Hint 56). The solar photovoltaics efficiency varies between ___________ 20-40% 9-70% 45-60% 8-40% Hint 57). The total efficiency of the solar thermal power plant is divided into ________ Receiver efficiency Generator efficiency Both a and b None of the above Hint 58). What are the layers which improve the receiver efficiency of solar thermal energy? Absorber layer coated tube Anti-reflective layer coated tube Both a and b None of the above Hint 59). The coating materials which are used in solar absorber should possess the _________ properties High absorptivity, low emissivity Strong adhesion, high durability High thermal conductivity, corrosion, and wear resistance All of the above Hint 60). What is the source of solar energy? Nuclear fusion Nuclear power plant Coal None of the above Hint 61). How many parts does solar energy have? One Two Three Four Hint 62). The semiconductor is the part of the solar cell that has ___________ Top layer Bottom layer Middle layer All of the above Hint 63). The solar radiation range in the visible rays is about _______ 40-41% 33-35% 42-43% None of the above Hint 64). The solar radiation range in infrared is about _______ 52-55% 33-35% 40-43% None of the above Hint 65). The solar radiation range in ultraviolet is about _______ 4-5% 3-5% 0-3% None of the above Hint 66). How many types of solar cells are there based on the crystal structure? One Two Three Four Hint 67). What are the parts of solar energy? Visible Infrared Ultraviolet All of the above Hint 68). What are the characteristics of the solar cells? Open-circuit voltage and short circuit current Fill factor Power conversion efficiency All of the above Hint 69). What is the most commonly used renewable energy? Solar energy Tidal energy Hydro energy None of the above Hint 70). What is the basic component of the PV system (Photovoltaic system)? Battery Charge collector Solar cell All of the above Hint 71). How much voltage does a single solar cell produce? 1v 0.5v 0.01v None of the above Hint 72). The efficiency of the poly crystalline silicon solar cell is about __________ 14-17% 12-17% 13-15% None of the above Hint 73). The semiconductor is the part of the solar cell that has ___________ One layer Two layers Three layers None of the above Hint 74). The types of solar cells based on the crystal structure are _________ Single crystal Polycrystalline Amorphous All of the above Renewable Energy Quiz Questions and Answers 75). The top layer of the semiconductor in the solar cell is also called as _______ P - type N - type PNP - type All of the above Hint 76). The top layer of the semiconductor in the solar cell consists of _______ Silicon Phosporous Silicon and phosphorous All of the above Hint 77). The thin bottom layer of the semiconductor in the solar cell consists of _______ Silicon Boron Silicon and boron All of the above Hint Read More about Semiconductors 78). The solar cookers utilizes the ___________ energy to cook food Infrared rays Ultraviolet rays Gamma rays None of the above Hint 79). A combination of solar panels connected together is known as ______ Solar cells Solar array Array None of the above Hint 80). What are the renewable energy sources of energy? Energy from wind, sun Energy from flowing water, ocean waves Fossil fuels such as coal, petroleum Both a and b Hint 81). How many components does solar energy have? One Two Three Four Hint 82). What are the renewable sources of energy? Solar energy, wind energy, hydroelectric power Geothermal, ocean Hydrogen, biomass All of the above Hint 83). Choose an odd one out Wind energy Fossil fuels Hydrogen Biomass Hint 84). Which materials are required to make the solar cooker? Aluminum sheet, wooden box, Reflector Glass slab, Black paint Both a and b None of the above Hint 85). The formula of energy emitted or energy radiated (p) by the sun is __________ p=4πR2 σT4 p=4πR2 σT2 p=4πR σT4 None of the above 86). The first generation of solar cell consists of __________ Large area High quality Single junction devices All of the above Hint 87). The efficiency of the first generation of solar cell is about _______ 15-20% 16-20% 10-20% None of the above Hint 88). The solar constant value is ________ 1327 W/m2 1366 W/m2 1357 W/m2 1377 W/m2 Hint 89). The efficiency of monocrystalline silicon solar cell is about __________ 14-17% 15-19% 16-18% None of the above Hint 90). In polycrystalline silicon solar cell which material is used as a raw material? Silver Copper Liquid silicon None of the above Hint 91). The deficiency of polycrystalline silicon solar cell is ________ Less than monocrystalline silicon solar cell Higher than monocrystalline silicon solar cell Equal to monocrystalline Si solar cell None of the above Hint 92). What are the materials required for the construction of solar cells? P-type material N-type material Both a and b None of the above Hint 93). The efficiency of amorphous silicon solar cell is about __________ 5-7% 15-19% 16-18% None of the above Hint 94). Who observed the materials which turn light into energy? August Mouchout Edmund Becquerel Miyasaka None of the above Hint 95). Who has seen the direct conversion of solar radiation into mechanical power? August Mouchout Edmund Becquerel Miyasaka None of the above Hint 96). Who developed perovskite materials into the solar cells? August Mouchout Edmund Becquerel Miyasaka None of the above Hint 97). The solar energy divided in to _________ Active Passive Both a and b None of the above Hint 98). The photovoltaics divided in to _________ Crystalline Thin films Both a and b None of the above Hint 99). The main components of the solar thermal power systems are ___________ Reflectors Receiver Both a and b None of the above Hint Read More about Electrical and Electronic Components 100). Which meter is used to measure the solar radiation flux ________ Pyranometer Sunshine Recorder Anemometer All of the above Hint 101). The solar water heater payback period is up to _______ 2-4 years 2-6 years 1-2 years 6-7 years Hint Time is Up! Time's up
