12-02-2015, 11:38 PM
i want viva questions on otec for seminar judge point of view.iwant questions with answers
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viva questions on ocean thermal energy conversion
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i want viva questions on otec for seminar judge point of view.iwant questions with answers
31-03-2017, 11:33 AM
Question No. 01: What is the largest hydroelectric power plant in the world?
A: The Three Gorges project in China on the Yang-Yang River is the largest power plant in the world with an installed capacity of about 22,500 MW.
Question No. 02: Why are unit sizes of hydroelectric machines not standardized as in the case of thermal power plants?
Answer: Because the size of hydroelectric machines is based on the availability of water in the river and the head of water available at a particular project site, the size of the machines continues to vary from location to river and river. Sizes are also based on logistics and water variation in the river during the year.
Question No. 03: How many hydroelectric dams are there in the world?
Answer: The FERC regulates approximately 2,300 dams producing hydropower. In addition, there are approximately 240 federal dams that produce hydroelectric power. Thus, there are a total of approximately 2,540 hydroelectric dams.
Question No. 04: How does the cost of generating the hydroelectric plant compare with other sources of electricity?
Answer: Hydropower generation is a very capital intensive mode of electricity generation, but it is a source of renewable energy without consumables, there is very little recurring cost and, therefore, there is no long-term high expenditure. It is cheaper compared to electricity generated from coal and gas plants. It also reduces financial losses due to frequency fluctuations and is more reliable as it is free of inflation due to non-use of fossil fuels.
Question No. 05: How much of the total potential of hydroelectric power has been exploited so far in India?
Answer: Approximately 19.9% of the hydroelectric potential has been exploited in India.
Question No. 06: Why is hydroelectric power called a renewable energy source?
Answer: Hydroelectric power is called a renewable energy source because it uses and does not consume water.
Question No. 07: What are the different circuits of the Thermal Power Plant?
Answer: Some of the main circuits of the thermal power station are:
Coal and ash circuit
Air and gas circuit
Cooling water circuit
Water and steam supply circuit
Question No. 08: Why is the efficiency of thermal plants low?
Answer: Almost 50% of the heat generated is lost in the condenser as heat rejection. It is inevitable, since without the rejection of heat it is not possible to convert thermal energy into mechanical energy and drive the turbine without falling temperature. Therefore, most of the loss takes place in the condenser. Thus, the efficiency of the thermal power station is between 30-35%.
Question No. 09: What is the oldest hydroelectric plant in India?
Answer: The oldest hydroelectric plant is located in the Darjeeling District in West Bengal. It has an installed capacity of 130 KW and was commissioned in the year 1897.
Question No. 10: What are the main reasons for balancing the hydrothermal mixture?
Answer: The seasonal load curves of our regional networks coincide with the pattern of hydropower generation. During the summer / monsoon season, when hydroelectric power generation is high, the system load factor is high because of the heavy agricultural load. During the winter, the thermal stations operating at the loading base and the hydroelectric stations working as peak load stations will handle the meteorological loads. Thus, the operational needs of hydroelectric plants are complementary and the balanced mix helps to optimize utilization of capacity.
Question No. 11: How is electricity generated from water?
Answer: Hydroelectric power plants capture the energy from the water fall to generate electricity. A turbine converts the kinetic energy of the water fall into mechanical energy. A generator then converts the mechanical energy of the turbine into electrical energy.
Question No. 12: In what cycle does the power station operate?
Answer: The thermal power plant works on the principle of the Rankine cycle.
A: The Three Gorges project in China on the Yang-Yang River is the largest power plant in the world with an installed capacity of about 22,500 MW.
Question No. 02: Why are unit sizes of hydroelectric machines not standardized as in the case of thermal power plants?
Answer: Because the size of hydroelectric machines is based on the availability of water in the river and the head of water available at a particular project site, the size of the machines continues to vary from location to river and river. Sizes are also based on logistics and water variation in the river during the year.
Question No. 03: How many hydroelectric dams are there in the world?
Answer: The FERC regulates approximately 2,300 dams producing hydropower. In addition, there are approximately 240 federal dams that produce hydroelectric power. Thus, there are a total of approximately 2,540 hydroelectric dams.
Question No. 04: How does the cost of generating the hydroelectric plant compare with other sources of electricity?
Answer: Hydropower generation is a very capital intensive mode of electricity generation, but it is a source of renewable energy without consumables, there is very little recurring cost and, therefore, there is no long-term high expenditure. It is cheaper compared to electricity generated from coal and gas plants. It also reduces financial losses due to frequency fluctuations and is more reliable as it is free of inflation due to non-use of fossil fuels.
Question No. 05: How much of the total potential of hydroelectric power has been exploited so far in India?
Answer: Approximately 19.9% of the hydroelectric potential has been exploited in India.
Question No. 06: Why is hydroelectric power called a renewable energy source?
Answer: Hydroelectric power is called a renewable energy source because it uses and does not consume water.
Question No. 07: What are the different circuits of the Thermal Power Plant?
Answer: Some of the main circuits of the thermal power station are:
Coal and ash circuit
Air and gas circuit
Cooling water circuit
Water and steam supply circuit
Question No. 08: Why is the efficiency of thermal plants low?
Answer: Almost 50% of the heat generated is lost in the condenser as heat rejection. It is inevitable, since without the rejection of heat it is not possible to convert thermal energy into mechanical energy and drive the turbine without falling temperature. Therefore, most of the loss takes place in the condenser. Thus, the efficiency of the thermal power station is between 30-35%.
Question No. 09: What is the oldest hydroelectric plant in India?
Answer: The oldest hydroelectric plant is located in the Darjeeling District in West Bengal. It has an installed capacity of 130 KW and was commissioned in the year 1897.
Question No. 10: What are the main reasons for balancing the hydrothermal mixture?
Answer: The seasonal load curves of our regional networks coincide with the pattern of hydropower generation. During the summer / monsoon season, when hydroelectric power generation is high, the system load factor is high because of the heavy agricultural load. During the winter, the thermal stations operating at the loading base and the hydroelectric stations working as peak load stations will handle the meteorological loads. Thus, the operational needs of hydroelectric plants are complementary and the balanced mix helps to optimize utilization of capacity.
Question No. 11: How is electricity generated from water?
Answer: Hydroelectric power plants capture the energy from the water fall to generate electricity. A turbine converts the kinetic energy of the water fall into mechanical energy. A generator then converts the mechanical energy of the turbine into electrical energy.
Question No. 12: In what cycle does the power station operate?
Answer: The thermal power plant works on the principle of the Rankine cycle.
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