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Unit II Renewable Power plants, 1) Which of the following is the Solar Power generation method, a) Solar thermal, b) Solar photovoltaic, c) None of these, d) (a) and (b), 2) In Solar photovoltaic power generator each semiconductor cells having, voltage……..V, a) 0.6, b) 0.1, c) 1, d) 6, 3) The output of photovoltaic cell is in the …….. form., a) AC, b) DC, c) Both, d) Can’t say, 4) Minimum wind speed required for the working of multi turbine mill, is……KMPH, a) 2, b) 4, c) 8, d) 16, 5) In Bio gas Janta Gobar Gas power plant ……. gas is generated as burning, gas., a) methane, b) sulfur dioxide, c) nitrogen dioxide, d) ammonia, 6) The sun releases enormous amount of energy due to continuous …….., reaction taking place in the sun., a) Fusion, b) Fission, c) Combustion, d) Radiation, 7) ……..is the ratio of maximum generated output energy to the maximum, supplied input energy., a) Maximum energy effectiveness, Prof .Mudegaonkar J. L., , KECSP, Page 1

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Unit II Renewable Power plants, b) Maximum energy efficiency, c) Maxima, d) Minima, 8) In OTEC working fluid is used as……, a) Propane, b) Oxygen, c) Water, d) Oil, 9) The sun sends out this energy in the form of …………, a) electromagnetic radiations, b) potential energy, c) kinetic energy, d) none of these, 10) The intensity of solar radiations depends upon the…….., a) Weather condition, b) Day or night time, c) Season, d) All above., 11) In solar thermal power generation, solar energy is converted in to ……., with the help of absorber., a) Steam, b) Water, c) Electricity, d) Heat, 12) The …………is used in solar thermal power plant to collect and, concentrate the solar radiations., a) Turbine, b) reflectors or collectors, c) generator, d) cooling tower, 13) In Solar photovoltaic power generation solar energy is directly converted, into DC electrical energy with the help of……….., a) Chemical cells, b) photovoltaic cells, c) Transistors, d) Resistors, Prof .Mudegaonkar J. L., , KECSP, Page 2

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Unit II Renewable Power plants, 14) Collector or reflector in solar thermal power plant collects the solar, radiation and concentrate it on single point or line with the help ………..., a) reflection principle, b) faradays principal, c) seeback effect, d) peltier effect, 15) In turbine when a high pressure steam is applied on blades ………….is, generated in the shaft., a) Potential energy, b) Nuclear energy, c) kinetic energy, d) heat energy, 16) …….are semiconductor devices when exposed in sun light generate, voltage., a) Photovoltaic cells, b) Diodes, c) Transistors, d) Capacitors, 17) Single photovoltaic cell is having output voltage about …. volt and, current …….., a) 6 volt ,10 Amp, b) 1.5 volt ,1 amp, c) 1 volt, 1 amp, d) 0.6 volt ,10 mA, 18) Which of the following is not a rechargeable battery?, a) nickel cadmium,, b) lead acid,, c) lithium ion,, d) lithium ion polymer, e) lithium metal hydride, f) Dry cell, 19) Inverter is an electronic circuit which converts ……….., a) DC in to DC, b) DC into Ac, c) AC into AC, d) AC into DC, Prof .Mudegaonkar J. L., , KECSP, Page 3

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Unit II Renewable Power plants, 20) Solar energy is available during the day time only is the disadvantage, of…., a) Tidal power plant, b) MHD, c) Solar power plant, d) Wind power plant, 21) The main challenge in the solar system is…….., a) Reducing module cost., b) Increasing the life time of solar system., c) Reducing raw material cost., d) Lowering of capital cost requirement., e) Optimum solar systems integration, f) All above, 22) HAWT and VAWT are the types of……., a) Tidal power plant, b) MHD, c) Solar power plant, d) Wind power plant, 23) Blades of wind turbine are made up from glass fiber reinforced plastic to, prevent from ….., a) Corrosion., b) Friction, c) Rotation, d) Combustion, 24) HAWT are designed from capacity……….., a) 15 KW to higher capacity 3MW, b) 15 W to higher capacity 30W, c) 10 MW to higher capacity 300MW, d) None of these, 25) The rotational speed of multi blade type wind mills is ………., a) 60 to 80 rpm, b) 700 to 100 rpm, c) 3000 to 5000 rpm, d) Above 10000 rpm, 26) Which is the suitable site for wind power plants?, a) Plane land sites, b) Hill top sites, c) Sea shore sites, Prof .Mudegaonkar J. L., , KECSP, Page 4

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Unit II Renewable Power plants, d) Off shore shallow water sites, e) All above, 27) ……..is the organic matter from plants, animals and micro organism, grown on land and water and their derivates., a) Biomass, b) Water, c) Nuclear fuel, d) Solar energy, 28) Which of the following is not the example of bio mass?, a) Coal,, b) petroleum products, c) natural gases, d) All above, 29) Municipal solids, Sewage wood products, Industrial Waste, Manure at, large lots, Crop residues, Logging residues, Disposed manure are the, sources of……….., a) Biomass, b) Hydro energy, c) Nuclear fuel, d) Solar energy, 30) The main sources of production of biogas are …….., a) cow dung, b) sewage, c) crop residues, d) vegetable waste, e) water hyacinth, f) Alga, g) poultry dropping, h) pig manure, i) ocean kelp, j) all above, 31) Biogas, a mixture containing ………of methane, a) 10 to 12%, b) 55 to 60%, c) 100%, d) 90 to 100%, Prof .Mudegaonkar J. L., , KECSP, Page 5

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Unit II Renewable Power plants, 32) Bio gas can be produced from the ………….of animal, plant and human, waste., a) Decomposition, b) Combustion, c) Burning, d) Gasification, 33) Biogas is clean and slow burning gas usually has a heating valve about, ………, a) 18KJ/m3, b) 180KJ/m3, c) 1800KJ/m3, d) 18000KJ/m3, 34) Biogas can use directly in …….., a) Cooking, b) domestic lighting, c) heating and IC engines, d) All above, 35) Biogas plant converts wet biomass into biogas by the process of ……., a) fermentation, b) Combustion, c) Burning, d) Gasification, 36) The bacteria called Anaerobe carries out digestion of bio mass without, oxygen and produces…………, a) methane and carbon dioxide, b) oxygen and nitrogen, c) helium and chlorine, d) Sulfur dioxide and argon, 37) Digester of bio gas is also called as…………, a) Combuster, b) Fermentation tank, c) Absorber, d) Turbine, 38) ………is the concept through which we can generate electricity using the, temperature difference of surface warm water and cold depth water of, ocean., a) OTEC, b) Tidal, c) Hydro electric, d) Nuclear, Prof .Mudegaonkar J. L., , KECSP, Page 6

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Unit II Renewable Power plants, 39) Generally OTEC systems are located ……., a) In hilly area, b) In residential area, c) In metro Politian area, d) Inside the hull (ship)., 40) The working fluid of OTEC whose vaporization point is less than 25°C is, …….., a) Propane, b) Ammonia, c) (a) only, d) (a) and (b), 41) Tidal power generation is also called ………, a) lunar power generation, b) thermal power generation, c) steam power generation, d) hydro electric power generation, 42) Turbo generator is the combination of ………., a) Turbine and condenser, b) turbine and reversible electric generator, c) boiler and reversible electric generator, d) can’t say, 43) …….. produces electricity by a chemical reaction without any, combustion., a) Fuel cell, b) Solar cell, c) Generator, d) Turbo generator, 44) In fuel cells, loss of electrons takes place on anode called as…….., a) Reduction, b) Oxidation., c) Fermentation, d) decomposition, 45) In fuel cells gain of electrons takes place on cathode called as……., a) Reduction, b) Oxidation., c) Fermentation, d) Decomposition, 46) The working principal of MHD is …………, a) faradays law of electromagnetic induction., b) Ohms law, c) Law of resistivity, Prof .Mudegaonkar J. L., , KECSP, Page 7

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Unit II Renewable Power plants, d) Seeback effect, 47) To increase the conductivity of ionized gas in OTEC, material like …..is, injected in it., a) Copper, b) Silver, c) tin, d) potassium carbonate., , Prof .Mudegaonkar J. L., , KECSP, Page 8