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Questions Constants: State 3 advantages and 3 disadvantages of fossil fuels. What are renewable and non renewable energy sources? Briefly explain and list 3 renewable and 2 non renewable energy sources. What percentage of world energy consumption and production is provided from fossil fuels? What percentage of world electrical energy consumption and production is provided from fossil fuels? What percentage of world electrical energy consumption and production is provided from nuclear power? State 2 advantages and 1 disadvantages of nuclear power. State 2 advantages and 2 disadvantages of solar power. State 3 advantages and 3 disadvantages of wind power. What percentage of world electrical energy consumption and production is provided from hydro-electricity power? State 1 advantages and 1 disadvantages of wind power. State 1 advantages and 1 disadvantages of biomass energy. State 1 advantages and 1 disadvantages of geothermal energy. What is the average energy consumption per capita (person) in your country? (Give your answer in kWh/year) What is the units of energy, power, pressure and force in SI unit system? Express units of the quantities in terms of basic units [kilogram], [meter] and [second]. Express unit of energy in terms of volts, amperes and time. Express unit of power in terms of volts and ohms. Express unit of energy in terms of force and length. Express unit of power in terms of energy and time. What is the velocity of a person of a person of mass 80 kg walking with a kinetic energy 75 J? If a pressure of 5.0 Pascal act on an area of 4 m2 what force is exert? Express unit of energy by pressure and volume. On a sunny day at noon 1300 watt.m-2 sunlight strike a perfect absorber. Calculate pressure act on the absorber by sunlight. Questions 1, 2 and 3 at the end of the lecture notes (Chapter 2: Units and Scale). State 3 device that convert energy from one form to other. State 3 types of energy and give examples. An electric motor consumes 100 watts (a joule per second (J/s)) of power to obtain 90 watts of mechanical power. Determine its efficiency? Illustration 4.2, 4.4, 4.5, 4.6, 4.7 and review questions. In a power plant, what is the efficiency of an ideal transformation from thermal energy into mechanical energy given by Carnot's cycle? Calculate this efficiency assuming the cold region to be at temperature TC=200Cand the hot region TH=3000C? Calculate the ideal coefficient of performance (C.O.P.) For an air-to-air heat pump used to maintain the temperature of a house at 70 °F when the outside temperature is 30 °F. What is Turkeyâ€™s average annual total radiation intensity per square meter through a year?