Solar Power and the Sun Quiz
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Questions and Answers

What is the main purpose of a Flat Plate Collector?

  • To store solar energy for later use
  • To convert solar energy into heat energy (correct)
  • To cool down water and air
  • To generate electricity directly from sunlight
  • Which type of solar collector is suitable for high temperature applications?

  • Non-Concentrating/ Stationary
  • Oil-based Solar Collectors
  • Flat Plate Collectors
  • Concentrating/ Sun-Tracking (correct)
  • What is the main advantage of Concentrating/ Sun-Tracking solar collectors?

  • They have concave reflecting surfaces
  • They track the sun, increasing radiation flux (correct)
  • They are suitable for low temperature applications
  • They are permanently fixed in position
  • Which working fluids are commonly used in Flat Plate Collectors?

    <p>Water and air</p> Signup and view all the answers

    What is the function of the concave reflecting surfaces in Concentrating Solar Collectors?

    <p>To intercept and focus solar beams to increase radiation flux</p> Signup and view all the answers

    In which type of solar collector does atmospheric turbidity have a greater impact on performance?

    <p>Concentrating/ Sun-Tracking</p> Signup and view all the answers

    What is the primary function of PV modules?

    <p>Convert sunlight into electricity</p> Signup and view all the answers

    Which material is commonly used in the construction of PV cells?

    <p>Silicon</p> Signup and view all the answers

    What does doping in the context of PV cells involve?

    <p>Adding atoms with different number of electrons to create an unbalanced number of electrons to the base material</p> Signup and view all the answers

    What is the main function of a P-N junction in a PV cell?

    <p>Creates a potential barrier and electric field for unidirectional flow of electrons</p> Signup and view all the answers

    What is the result of electrons moving to the p-type silicon and holes to the n-type silicon in a PV cell?

    <p>Builds up a fixed potential barrier at the junction opposing further movement of free carriers</p> Signup and view all the answers

    In a solar thermal power plant, what is the primary role of photovoltaics?

    <p>Converting sunlight into electricity</p> Signup and view all the answers

    What is the main purpose of a solar collector?

    <p>To absorb solar radiation and convert it into heat</p> Signup and view all the answers

    Which of the following is a common agricultural application of solar energy?

    <p>Using solar energy for grain drying</p> Signup and view all the answers

    What does solar-thermal conversion involve?

    <p>Converting solar radiation to heat for various applications</p> Signup and view all the answers

    What is the impact of atmospheric turbidity on solar radiation?

    <p>It reduces the intensity of solar radiation reaching the Earth's surface</p> Signup and view all the answers

    In crop and grain drying methods, what role do simple natural convection-type dryers play?

    <p>They use solar energy to facilitate drying through air circulation</p> Signup and view all the answers

    How does a solar cabinet-type dryer function in crop and grain drying?

    <p>By employing a closed system that uses solar energy to dry crops efficiently</p> Signup and view all the answers

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