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Choose the correct answer: 1. 1 Megawatt a. 10 watt b. 10 watt c. 10 kwatt d. 10-kwatt 2. ljoule is a. 10'k joule b. 10 k joule c. 1 mega joule d. 10-k joule 3. The first law of thermodynamics is equivalent to the law of.................. Energy cannot be created or destroyed, but it can change forms a. changes of energy b. conservation of energy c.. loss of energy d. gain of energy 4. In the first law of thermodynamics the quantities Q and Ware positive if a. energy is added to the system b.If energy released c.gas expand d. gas contract 5. Heat is not transferred by:- a convection b. conduction c. radiation.... d. transportation 6. Nonrenewable energy sources like a.solar energy b.wind energy c.bio fuels c. hydropower 7. A modern design called CSP = Concentrating Solar Power focuses incoming solar radiation onto a heat engine. The direct conversion of solar photons into electric power is called a. photons b.potential energy c. light d. photovoltaics
8. Power (P) from wind is given by the formula: a.Papu b. U=pu right d none a, b, c, is 9. A hydropower station uses a dam, from which water will go down a height h and pass a turbine. The potential energy of the water is converted into kinetic energy of the turbine, which is 1101462 a. using turbine busing the rotations to mechanical conversion c. coupled to an electric generator d.coupled 10. The power given by the dams is: a. P=PQgh b.Q=Pphg a c.p=QPgh d.Q=Pph