Question 4. 25 Points A single area consists of two generati…
Question 4. 25 Points A single area consists of two generating units, rated at 400 and 800 MVA, with speed regulation of 4 percent and 5 percent on their respective ratings. The units are operating in parallel, sharing 700 MW. Unit 1 supplies 200 MW and unit 2 supplies 500 MW at 1.0 per unit (60 Hz) frequency. The load is increased by 130 MW. Assume there is no frequency-dependent load, i.e., D = 0. Find the steady-state frequency deviation and the new generation on each unit.
Read DetailsQuestion 5. 15 Points The fuel-cost functions in $/h for two…
Question 5. 15 Points The fuel-cost functions in $/h for two thermal generation stations are given by C1 = 800 + 6.0P1 + 0.004 P12 C2 = 1000 + 6.8P2 + 0.002 P22 where P1 and P2 are in MW. The total power demand is 1300 MW. Neglecting losses, determine the optimal generation of each plant and the incremental cost of power λ ($/MWh).
Read DetailsA dentist devised a screening test for dental caries. An ind…
A dentist devised a screening test for dental caries. An independent blind comparison was made with a gold standard for diagnosis of dental caries among 200 patients. Among the 50 patients found with dental caries according to the gold standard, 35 patients were positive for the test. Among 150 patients found without dental caries according to the gold standard, 30 patients were found to be positive for the test. Dental Caries Test Present Absent Positive 35 30 65 Negative 15 120 135 50 150 200 The correct parameters of the test are:
Read DetailsTom started the process of selecting a new system for the fi…
Tom started the process of selecting a new system for the firm and he is weighing all of the various issues that need to be considered and the resources he has at his disposal as he makes this important decision. As Tom prepares to narrow the field in his selection of a new system, he wants a quick refresher on the difference between a request for proposal (RFP) and a request for quotation (RFQ). If he needs a request for proposal (RFP), Simone will write it, and if he needs an RFQ, Marny is responsible for writing that. Which of the following is true?
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