A steam power plant operates on a practical Rankine Cycle. The steam enters the turbine at 3 MPa and “648” K and is condensed in the condenser at a pressure of 46 kPa. You are assigned on a project to improve the thermal efficiency of this plant. a) Draw the schematic of the plant and determine the thermal efficiency of the practical cycle assuming that the efficiencies of pump and turbine are 0.75 and 0.7, respectively. ( b) Draw a TS diagram and show your suggestions for improving the thermal efficiency (i.e. increasing/decreasing temperature of steam entering into turbine, increasing/decreasing pressure of the boiler or condenser, and any other option). Show the effect of each case you suggest on a TS diagram. Discuss also the quality of steam in each case.

Question 6. There are two bidders in a sealed-bid, second-price auction. The object for sale has a common value. Each bidder, i = 1,2, receives a signal i that is independently and uniformly distributed on the interval [0, 1]. The true value of the object, v, is the average of the two signals,

v = (σ1 + σ2) / 2

(a) If bidder 1 gets the signal σ = 0.7, how much does he think the object is worth?

(b) Suppose that each bidder submits a bid equal to the expected value of the object (conditional on his signal). If bidder 1 submits the winning bid, what is the expected value of the object?

(c) What is the expected surplus for bidder 1 under the assumptions in (b)?

A company is considering different options with respect to the current asset policy. In all instances, the firms fixed assets will be $1,000,000 and the firm plants to use of debt ration of 70% (D/TA = 0.7). The market interest rate is 9% on all debt used (both short and long term). Two options are under consideration: Option 1 - hold current assets equal to 30% of projected sales. Option 2 - hold current assets equal to 60% of projected sales. The company forecasts it will earn 25% of sales before paying interest (EBIT = 0.25 * Sales) and projects to do $3,000,000 in sales. Finally, the federal and state tax rate is 35%. What is the ROE for each option?

A 34kg child runs with a speed of 2.4 m/s tangential to the rim of a stationary merry go round. The merry go round has a moment of inertia of 520 kg*m^2 and a radius of 2.00m. After the child hops on the merry go round it rotates with an angular speed of 0.3 rad/s. Find the initial and final kinetic energy of the system. (merry go round and the child). If a frictional torque of 340 is present to slow down the merry go round, find the angular deceleration and calculate the angle in radians in which the merry go round rotates until it stops

Jason has not been studying and believes that the probability that he will pass his chemistry exam is 0.4, the probability that he will pass the biology exam is 0.3 and the probability that he will pass both exams is 0.18.

1) Find the probability that Jason will pass at least one of the exams.

2)Find the probability that he will pass the chemistry exam given that he passes the biology exam.

3)Find the probability that he will pass the biology exam if he passes the chemistry exam.

4)Find the probability that he will fail both exams.

Please answer questions and explain answer!! Thank you

question:

Bits 0 and 1 are transmitted in the data transmission channel,  due to a noise, a single bit is incorrectly received by a probability of 0.3 , Playback For encoding instead of bit 0, the code word 00000 and bit 1 are transmitted as code word 11111,The receiver decodes the codeword received by selecting the most frequently occurring bit ,  for example 00000 → 0, 01010 →

(a) What is the probability that the received code word is correctly decoded?

(b) When millions of bits are transmitted over the data channel over the above repetition coding, what is the expected value of decoded codewords incorrectly?

2. The following data of the dust levels in both urban homes and farm homes is given below as:

U: 6.0, 5.0, 11.0, 33.0, 4.0, 5.0, 80.0, 18.0, 35.0, 17.0, 23.0

F: 4.0, 14.0, 11.0, 9.0, 9.0, 8.0, 4.0, 20.0, 5.0, 8.9, 21.0, 9.2, 3.0, 2.0, 0.3

a) Compute sample mean, median and quartiles of each sample. How do they compare? Comment on your findings.

b) Construct a stem-and-leaf diagram for each sample and a comparative box plot. Compare the two samples and comment on the possible presence of outliers.

Suppose you want to estimate the average mpg for cars being driven from campus to the Brass Rail. You sample a few of cars. The average mpg in your sample is 22, and the standard deviation is 10. If you want the error of the confidence interval to be no greater than 0.3 and to be 90% likely to contain the true population mean, how many cars should you randomly sample?

Group of answer choices

A)about 3,007 cars

B)about 9,112 cars

C)about 311 cars

D)about 942

E)This question cannot be answered using the information given

Convection Heat transfer internal flow

Consider water flowing in a heated tube. The tube is 14 m long with an inner diameter of 1 cm. The heat
is added at 1500 W/m2 uniformly along the tube. Water flows at 0.3 m/s. Use the following water property
? = 1000 kg/m³, ? = 1.4 × 10^?3 kg/m·s, cp = 4.2 kJ/kg·K, k = 0.58 W/m·K, and determine

1. Heat transfer coefficient at the tube exit.
2. Tube surface temperature at the exit, with the mean inlet temperature of water at 7°C.