Question No. 40 Correct Answer (2) Ma'am you are confused between photovoltaic cells and solar thermal energy collector. Do some research please.... 1. False.... The basic unit of STEC is not a solar cell. Solar cells are used in photovoltaic (PV) systems to convert sunlight directly into electricity. STECs, on the other hand, use solar collectors to capture and concentrate sunlight to generate heat, which is then used to produce electricity or for direct heating applications. 2. True.... STECs can be either flat plate or concentrating type. Flat plate collectors are typically used for lower temperature applications, such as residential water heating, while concentrating collectors focus sunlight to a small area, generating higher temperatures suitable for power generation or industrial processes. 3. True.... In concentrating solar thermal systems, temperatures can indeed rise over a thousand degrees Celsius. For example, central receiver systems (solar towers) and parabolic dish systems can achieve temperatures well above 1000°C. 4. True.... STECs can produce electricity. They do this by using the collected heat to drive a heat engine, such as a steam turbine, which generates electricity. 5. True.... A paraboloid dish collector is a type of concentrating STEC that can achieve very high temperatures, up to around 2000 degrees Celsius. These high temperatures are suitable for applications such as power generation and certain industrial processes.
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Question No. 40
Correct Answer (2)
Ma'am you are confused between photovoltaic cells and solar thermal energy collector.
Do some research please....
1. False.... The basic unit of STEC is not a solar cell. Solar cells are used in photovoltaic (PV) systems to convert sunlight directly into electricity. STECs, on the other hand, use solar collectors to capture and concentrate sunlight to generate heat, which is then used to produce electricity or for direct heating applications.
2. True.... STECs can be either flat plate or concentrating type. Flat plate collectors are typically used for lower temperature applications, such as residential water heating, while concentrating collectors focus sunlight to a small area, generating higher temperatures suitable for power generation or industrial processes.
3. True.... In concentrating solar thermal systems, temperatures can indeed rise over a thousand degrees Celsius. For example, central receiver systems (solar towers) and parabolic dish systems can achieve temperatures well above 1000°C.
4. True.... STECs can produce electricity. They do this by using the collected heat to drive a heat engine, such as a steam turbine, which generates electricity.
5. True.... A paraboloid dish collector is a type of concentrating STEC that can achieve very high temperatures, up to around 2000 degrees Celsius. These high temperatures are suitable for applications such as power generation and certain industrial processes.
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