MCQ Science and Technology Part II Class 10 Chapter 5 Maharashtra Board Towards Green Energy 1. In a natural gas power plant, what drives the turbine?Wind energyHigh-temperature and high-pressure gas from combustionSolar radiationSteam from boiling waterQuestion 1 of 202. What is the initial energy form in a natural gas power plant?Thermal energyChemical energyElectrical energyKinetic energyQuestion 2 of 203. Why does natural gas combustion produce less pollution than coal?It requires less fuelIt does not contain sulphurIt is renewableIt produces more energyQuestion 3 of 204. What component in a wind turbine increases rotations per unit time?BladesShaftGear-boxGeneratorQuestion 4 of 205. What energy source is used in a hydroelectric power plant?Potential energy in stored waterNuclear energyChemical energy in coalSolar energyQuestion 5 of 206. What drives the turbine in a hydroelectric power plant?Solar radiationKinetic energy of flowing waterWind energySteam from boiling waterQuestion 6 of 207. What is an advantage of hydroelectric power generation?It requires fossil fuelsIt does not cause pollution from fuel combustionIt causes air pollutionIt depletes water resourcesQuestion 7 of 208. What is a problem associated with hydroelectric power plants?Radioactive wasteSubmerging of villages due to back-waterAir pollutionHigh fuel costsQuestion 8 of 209. What converts the kinetic energy of wind into electrical energy?BoilerWind turbineNuclear reactorSolar panelQuestion 9 of 2010. Where is wind velocity typically high, suitable for wind turbines?Urban areasDense forestsSea shoresMountain valleysQuestion 10 of 2011. What limits the use of wind energy for electricity generation?It causes air pollutionWind velocity is not available everywhereIt requires fossil fuelsIt depletes water resourcesQuestion 11 of 2012. How is electrical energy generated directly from solar radiation?Using a wind turbineUsing solar photovoltaic cellsUsing a nuclear reactorUsing a steam turbineQuestion 12 of 2013. What is the solar photovoltaic effect?Converting wind energy into electrical energyConverting solar radiation directly into electrical energyConverting solar energy into thermal energyConverting nuclear energy into electrical energyQuestion 13 of 2014. What material is commonly used in solar photovoltaic cells?IronSiliconCopperAluminumQuestion 14 of 2015. What is the typical potential difference produced by a silicon solar cell?0.2 V0.5 V1.0 V2.0 VQuestion 15 of 2016. What type of current do solar photovoltaic cells generate?Pulsating currentDirect current (DC)Alternating current (AC)Variable currentQuestion 16 of 2017. What happens when solar cells are connected in series?The potential difference is addedThe current is addedBoth current and potential difference are addedNeither current nor potential difference is addedQuestion 17 of 2018. What happens when solar cells are connected in parallel?The potential difference is addedThe current is addedBoth current and potential difference are addedNeither current nor potential difference is addedQuestion 18 of 2019. How many 100 cm² solar cells in series are needed to produce 18 V?183672100Question 19 of 2020. What is the typical efficiency of a good solar cell?5%15%25%35%Question 20 of 20 Loading...
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