Generation of Electricity Assignment Example | Topics and Well Written Essays - 1000 words

Generation of Electricity - Assignment Example However, the PVs may also be ustilised in the production of alternating current when appropriate appliances are utilised. According to Knier (2002), photovoltaics uses the atomic level to convert light directlt into the generation of electricity. These involve using materials that can absorb light photons and later release electrons, such materials are said to have photoelectric effect. The capturing of the electrons produced by the photoelectric effects helps in the generation of electricity. According to the diagram above, rays from the sun are tapped by the photovoltaic cells. A common photovoltaic cell is a silicon cell that consist of N-type and P-type silicon. Thses silicon are located at the top most part of the material. The generation of electric field takes place at the upper part of the cells where the two silicons are situated. They comes into contact with the junction of the materials (referred to as P-N junction) (McNichol, 2006; Bazilian et al., 2013). The sunlight strikes the electric filed to induce motion of the electron that results in the flow of current. The size of the surface area of the PV cell determines the amount of electricity generated. The intensity of the rays from the sun also affects the amount of current generated. The larger the size of PV cells and the more intense the rays, the higher the amount of electrons generated hence increased electric supply. For instance a cell with an area of 150 cm^2 will generate 2 watts power. When a solar panel is exposed in the sunlight as shown in the diagram below, it will generate electricity that can be measured. The voltage produced is around 100volts on a single day when there is optimal sunshine. This can be stored on batteries arranged in series as shown in the diagram below. The results of such a strategy depends on the size of the panel and the amount of sunshine ( Knier, 2002; Wolfgang, 2013). Primary batteries are cheap because

The Internal Assessment Essay Example | Topics and Well Written Essays - 500 words

The Internal Assessment - Essay Example Service spending showed a modest rebound in the later parts of the year. The core inflation declined in the year 2013 to as low as almost full percentage point below the Board of Governors of Federal Reserve System’s long term target. The Board of Governors of Federal Reserve System’s long term target was at 2%. The bank also experienced an increase in US household net worth in the year 2013. There was an approximate growth of 12% in the home prices in the year 2013. However, signs of deceleration were seen in the final parts of the year. The treasury yield also experienced a rise over the course of the year despite the speculations that the Federal Reserve would adjust their pace of purchasing mortgage backed securities. Despite the fact that there was a federal government shutdown in the month of October, there was very minimal impact on the performance of the economy of the United States of America. the federal reserve made an announcement that it will reduce its security purchases in the year 2014. However, they had no intentions of raising the federal fund rates unless the employment rate had reaches the 6.5% threshold. Non-interest expense experienced a decrease from $2.9 billion to $69.2 billion. With relation to the project New BAC, which was first introduced during the third quarter of 2011, the bank continued to get cost saving in some noninterest expense categories (Adrien, Anderson, Garden, Lusthaus and MontalvaÃŒ n 89). This helped them in the process of streamlining their workforce. The bank expects the total savings from this project to get to $12 billion by the year 2015. $1.5 billion per quarter of the same has already been realized by the year 2014. The bank’s effective tax rate for 2013 was driven by their recurring tax preference items and by some tax benefits relating to non-U.S. operations, including additional tax benefits from the 2012 non- U.S. restructurings. These benefits were partially offset by the $1.1 billion