Name: MARLON JAY A. DELUSTRE Course&Sec: BSEE-4A MIDTERM EXAM 1. A thermal power plant has an input heat energy from the fuel at the rate of 1,600 kJ/second. The thermal efficiency of the plant is 42%. How much output will the plant produced? -----Solution is attached at the 2nd page----- 2. A hydroelectric power plant receives 3 m3 of water per second from a reservoir located 43 meters above the turbine. The losses in the pipeline (penstock) is 3.8 meters and the hydraulic efficiency is 82%. What will be the output of the plant? -----Solution is attached at the 2nd page----- 3. What are the different elements being considered in designing a power plant? - - - Fixed elements - these are the elements that are fixed or permanent such as: buildings, land, generating equipment and other similar structure that are long lasting. These are also fixed assets and the initial cost will just depreciate every year. Energy elements are factors affecting the annual cost of input energy such as fuel, water or steam consumed by the plant. Cost of distribution and billing. These are about the cost involve in metering, billing and collection. These are lower expenses which are included in charging the customers of the price per kw hr. Cost of profit charged by the company to recover the investment. This also called Investors Profit which becoming higher today because of inflation and increasing interest on bank loans. 4. Explain why the power generated should be always within the standard voltage and frequency? - Power generated should be always within the standard voltage and frequency, in order to keep the expected operating conditions and supply energy to all the users or the loads that are connected. It is important, to avoid unexpected disturbances that can create problems to the connected loads or even cause the system to fail.
