Consider an ideal gas turbine cycle with two stages of compression and two stages of expansion.  The pressure ratio across each compressor stage and each turbine stage is 5 to 1. The pressure at the entrance to the first compresor is 100 kPa, the temperature entering each compressor is 25°C (298 K), and the temperature entering each turbine is 1100°C (1373 K). An ideal regenerator is also incorporated into the cycle.  For the air involved, it may be assumed that Cp = 1.005 kJ/kg.K and the specific heat ratio, k = 1.4.

(a) The compressor work is __ kJ/kg. (b) The turbine work is __ kJ/kg. (c) The cycle efficiency is __ %.

1. Provide an example of any two leading companies from the same industry which are competing directly for marketshare. Give a short profile (300-500 words) for each (provide references for your answers). 2. If you are the manager of one of these companies, what pricing policy do you adopt to be in the first position? Why? (100-200 words) 3. When the whole sector of the market is occupied by the little number of big corporations who share the leadership, what do we call this type of market structure? Explain in details the benefit of this market for the leading company and the disadvange of such situation on final consumers (300-500 words)

1. The City of Blueville has implemented Red Light Camera Program for one year and the City Manager wants to evaluate the effectiveness of program. After reviewing the traffic accident reports in the past several decades years, Assistant City Manager found that there were average of 115 accidents each year, normally distributed with standard deviation of 25. There were 100 accidents during the first year.

1. Test the (alternative) hypothesis that the number of accidents was reduced significantly at 0.05 significance level. (10 points)

Calculate 95% confidence interval, and what will be your conclusion? Explain why you reach or do not reach the same conclusion as in question (a).

You obtain the following sample autocorrelations and partial autocorrelations for a sample of 100 observations from actual data: Lag 1 2 3 4 5 6 7 8 acf 0.420 0.104 0.032 −0.206 −0.138 0.042 −0.018 0.074 pacf 0.632 0.381 0.268 0.199 0.205 0.101 0.096 0.082 Use the Ljung–Box Q* test to determine whether the first three autocorrelation coefficients taken together are jointly significantly different from zero. The relevant critical value table can be found in slides [time-varying market returns part 2], page 13.

Simmons, Inc., is considering a new 4-year project that requires an initial fixed asset investment of $3.65 million. The fixed asset is eligible for 100 percent bonus depreciation in the first year. At the end of the project, the asset can be sold for $460,000. The project is expected to generate $3.25 million in annual sales, with annual expenses of $975,000. The project will require an initial investment of $510,000 in NWC that will be returned at the end of the project. The corporate tax rate is 21 and the project has a required return of 15 percent. What is the NPV of the project? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Sweet Company’s outstanding stock consists of 1,600 shares of noncumulative 4% preferred stock with a $100 par value and 11,600 shares of common stock with a $10 par value. During the first three years of operation, the corporation declared and paid the following total cash dividends. Dividends Declared & Paid Year 1 $ 3,600 Year 2 $ 9,200 Year 3 $ 40,000

The total amount of dividends paid to preferred and common shareholders over the three-year period is:

Multiple Choice $15,600 preferred; $37,200 common.

$12,800 preferred; $40,000 common.

$19,200 preferred; $33,600 common.

or

$6,400 preferred; $46,400 common.

2- Develop a simulink model for natural PWM inverter connected to a dc source of 100 V and an output frequency of 60 Hz. The load is a series RL load with R = 10 Ohm and L = 25 mH. Use the simulation to Determine (a) The frequency Ratio to eliminate the 11th harmonic . (b) The fundamental output Voltage V1 (first term of Fourier series) (c) The fundamental output current I1 (d) If the load requires a fundamental peak voltage V1=80V, find the necessary modulation index .

Your report must include screen capture of the Simulink model, scopes, displays in addition to solver and step time configuration.

ok here is my homework

This assignment focuses on file streams.

Your program will accept the name of an input file from the user, and the name of an output file from the user. You may assume the input file contains no more than 100 lines.

Your program will write the lines of the input file to the output file in reverse line order, i.e. the first line of the input file becomes the last line of the output file, the second line of the input file becomes the second-to-the-last line of the output file, and so forth. Note that the lines themselves are not reversed, only the order in which the lines appear.

Intro to Python!

1. Using while loops, write a program that prints multiples of 5 which are less than 100. Your loop initially starts from 0.

2. Consider B to be a list of alphabetically ordered strings. Using while loops, write a program that only prints words which start with letter A.

B = [Alex, Airplane, Alpha, Australia, Ben, Book, Bank, Circuit, Count, Dark]

3. Using while loop, create a program that only prints first 18 multiples of 7.Hint: Your loop initially starts from 1. You should create a counter to keep track!