(c) 10 i. ii. marks Any physical activity in this world, whether carried out by human beings or by nature, is cause due

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C 10 I Ii Marks Any Physical Activity In This World Whether Carried Out By Human Beings Or By Nature Is Cause Due 1 (240.28 KiB) Viewed 30 times

(c) 10 i. ii. marks Any physical activity in this world, whether carried out by human beings or by nature, is cause due to flow of energy in one form or the other. Non-conventional energy resources which are considered for large-scale use after oil crisis of 1973, are called non-conventional energy sources, e.g., solar, wind, tidal, etc Mention ten of the advanced or non-conventional energy conversion systems. Define briefly with add of drawing a schematic diagram of a single basin arrangement of the tidal energy conversion system, solar energy system, and hydroelectric conversion systems. ili. Discuss briefly the advantages and disadvantages of the Tidal Energy Conversion System (TECS) Intended Learning Outcomes (ILOS) Marks Knowledge & Understanding Intellectual Skills Practical Skills ( 20 ) k1, k2, k3, k4, k5,k6 11, 12, 13, 14, 15, 16 p1, p2,p3 An electric furnace smelts 2000 kg of tin per hour. If the furnace takes 100 kW of power from the electric supply, its efficiency = 59.15 %, given: the smelting temperature of tin = 235°C; latent heat of fusion = 26620 kcal; find the initial temperature in °C; specific heat of tin = 0.056. Take J (mechanical equivalent of heat) = 4200 J/kcal. Q3 (a) 6 marks (b) 4 marks A heater is required to give 800 Cal/min on a D.C. voltage = V. The length of wire required for this heater 44.6 meter, if its resistance is 4 12 per meter Find the voltage V Ten electric heaters, each taking 100 W were used to dry out on site an electric machine which had been exposed to a water spray. They were used for 50 hours on a 240 V supply at a cost of twenty paise/kWh. Find the value of current, power in kW, energy in kWh and cost of energy. (c) 4 marks