Class 10 Quiz Level 3 (Difficult) – Source Of Energy Leave a Comment / By Gulam Hamza / August 13, 2024 Class 10 Quiz Level 3 (Difficult) – Source Of Energy Total questions: 10 1. In a geothermal power plant, if the thermal efficiency is 20% and the heat extracted from the geothermal reservoir is 2000 MJ, calculate the electrical energy produced in megajoules (MJ). Deselect Answer 200 MJ 400 MJ 600 MJ 800 MJ None 2. A hydroelectric dam has a water flow rate of 800 cubic meters per second and a height of 150 meters. If the efficiency of the power generation is 90%, calculate the power output in megawatts (MW). (Use g = 9.8 m/s² for gravitational acceleration and the density of water = 1000 kg/m³) Deselect Answer 1,058 MW 1,008 MW 1,058.4 MW 1,116 MW None 3. A pumped-storage hydroelectric system pumps water to a height of 200 meters using 1,000 MWh of energy. If the system has an efficiency of 70%, calculate the potential energy stored in megawatt-hours (MWh). Deselect Answer 700 MWh 800 MWh 500 MWh 600 MWh None 4. A concentrated solar power (CSP) plant has a thermal efficiency of 25% and receives 10,000 MJ of solar energy per day. Calculate the electrical energy output per day in megajoules (MJ). Deselect Answer 1,000 MJ 2,000 MJ 2,500 MJ 3,000 MJ None 5. A biogas plant produces 1,200 cubic meters of biogas per day with an energy content of 22 MJ per cubic meter. Calculate the total daily energy production in megajoules (MJ). Deselect Answer 24,000 MJ 26,400 MJ 20,400 MJ 23,000 MJ None 6. A solar panel system with an area of 20 square meters has an efficiency of 18%. If the solar irradiance is 1000 W/m², calculate the total power output of the system. Deselect Answer 2.8 kW 3.6 kW 3.0 kW 4.5 kW None 7. A biogas plant produces 1,500 cubic meters of biogas per day with an energy content of 21 MJ per cubic meter. Calculate the total daily energy production in megajoules (MJ). Deselect Answer 28,000 MJ 31,500 MJ 33,000 MJ 37,500 MJ None 8. A solar panel with an area of 25 square meters and an efficiency of 20% is installed in a region receiving an average solar irradiance of 800 W/m². Calculate the total power output of the system in kilowatts (kW). Deselect Answer 3 kW 4 kW 5 kW 6 kW None 9. A wind turbine generates 750 kW at wind speeds of 14 m/s. If the wind speed drops to 11 m/s, calculate the new power output assuming the power output is proportional to the cube of the wind speed. Deselect Answer 307.1 kW 432.1 kW 513.0 kW 363.7 kW None 10. A hydroelectric dam has a water flow rate of 900 cubic meters per second and a height of 110 meters. If the efficiency of the power generation is 92%, calculate the power output in megawatts (MW). (Use g = 9.8 m/s² for gravitational acceleration and the density of water = 1000 kg/m³) Deselect Answer 872.3 MW 892.8 MW 905.0 MW 919.2 MW None 1 out of 10 Time's up
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