2.A n+400-k VA, 2300+n- 230+n-v, 60-hz transformer supplies a 0.8 lagging power-factor load whose KVA Is adjustable from no load to 120 percent rated KVA. The percent resistance, percent reactance, and percent core loss are m+1.56, m+3.16, and m+0.42 respectively. For 2 KVA increments of load, tabulate and plot the efficiency of the transformer from no load to 120 percent rated load. Use Matlab
n=20
m=.2
In: Electrical Engineering
A steam turbine operates with steam at inlet conditions of 3.5 MPa and 3500 C. The exit stream leave the turbine is at 0.8 MPa and is known to contain a mixture of saturated vapor and liquid. The steam rate through the turbine is 1000 kg/h. A (negligible) fraction of exit stream is bled through a throttle valve to 0.10 MPa and is found to be 1250 C. The measured output of the turbine is 100 kW.
a) Determine the temperature and quality of the exit stream.
b) Determine the rate of heat transfer into or out of the turbine during its operation.
In: Mechanical Engineering
The following data is given for a horizontal highway
curve having 2 lanes with Lane width of 3.65 m each: Ruling design
speed is 110kmph, Allowable rate of change of circular acceleration
= 0.5 to 0.8. Allowable rate of introduction of super-elevation = 1
in 144, Take maximum allowable superelevation and lateral
frictional co-efficient is 0.15.
Calculate the length of a transition curve for following cases.
Rate of change of centrifugal acceleration
(C).
Rate of introduction of super-elevation.
Using empirical equations for plain and mountainous
terrain.
In: Civil Engineering
The summary of the payroll for the monthly pay period ending July 15 indicated the following:
|
Sales salaries |
$135,000 |
|
Federal income tax withheld |
32,300 |
|
Office salaries |
30,000 |
|
Medical insurance withheld |
7,370 |
|
Social security tax withheld |
10,200 |
|
Medicare tax withheld |
2,550 |
Journalize the entries to record (a) the payroll and (b) the employer's payroll tax expense for the month. The state unemployment tax rate is 3.1%, and the federal unemployment tax rate is 0.8%. Only $30,000 of salaries are subject to unemployment taxes.
In: Accounting
Bass - Samples: The bass in Clear Lake have weights that are normally distributed with a mean of 1.9 pounds and a standard deviation of 0.8 pounds.
(a) If you catch 3 random bass from Clear Lake, find the
probability that the mean weight is less than 1.0
pound. Round your answer to 4 decimal
places.
(b) If you catch 3 random bass from Clear Lake, find the
probability that the mean weight it is more than 3
pounds. Round your answer to 4 decimal
places.
In: Math
Coconut, Inc. has sales of $610,400, total equity of $170,000, a profit margin of 10 percent and a debt-equity ratio of 0.8. What is the return on assets?
|
23.70 percent |
||
|
21.34 percent |
||
|
19.95 percent |
||
|
25.50 percent |
4 points
QUESTION 22
Blueberry, Inc. has total assets of $642,000. There are 60,000 shares of stock outstanding with a market value of $42 a share. The firm has a profit margin of 7 percent and a total asset turnover of 1.36. What is the price-earnings ratio?
|
26.50 |
||
|
41.18 |
||
|
18.20 |
||
|
33.06 |
In: Finance
In a far away and long ago, there are only two weather states, rain and sun. If it's sunny today the probability it's be sunny tomorrow is 0.8. If it's rainy today the probability it'll be sunny tomorrow is 0.4. Weather changes are well described by a Markov chain. a) It's sunny today, and tomorrow is the start a 4-day holiday. What is the probability that all 4 days are sunny? b) A parade scheduled for the last day of the holiday. What is the probability of rain on the parade? c) A royal wedding is planned for one year (365) from today. If it's an outdoor wedding what is the probability the wedding gets rained out.
Hint: This is the steps. Thank you
n a land far away and long ago, there are only two weather states, rain and sun. If it's sunny today the probability it'll be sunny tomorrow is 0.8. If it's rainy today the probability it'll be sunny tomorrow is 0.4. Weather changes are well described by a Markov chain. (a) It's sunny today, and tomorrow is the start a 4 - day holiday. What is the probability that all 4 days are sunny? (b) A parade scheduled for the last day of the holiday. What is probability of rain on the parade? (c) A royal wed ding is planned for one year (365 days) from today. If it's an outdoor wedding what is the probability the wedding gets rained out
In: Statistics and Probability
The time married men with children spend on child care averages 6.0 hours per week. You belong to a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.0 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week the husband spends on child care. The sample data are contained in the table below.
| 11.8 | 10.9 | 9.1 | 9.7 |
| 5.7 | 3.8 | 10.0 | 4.8 |
| 7.5 | 5.7 | 0.8 | 8.2 |
| 6.6 | 6.7 | 8.0 | 6.9 |
| 10.9 | 5.2 | 11.1 | 4.9 |
| 4.0 | 9.9 | 10.1 | 6.6 |
| 4.0 | 10.0 | 5.0 | 4.6 |
| 3.0 | 9.5 | 9.3 | 3.7 |
| 6.7 | 2.3 | 1.7 | 8.9 |
| 9.2 | 7.1 | 10.2 | 0.8 |
a. What are the hypotheses if your group would like to determine if the population mean number of hours married men are spending in child care differs from the mean reported in your area?
b. What is the sample mean (to 1 decimal)?
Calculate the value of the test statistic (to 2 decimals).
What is the p-value?
- Select your answer -lower than .01between .01 and .025between .025 and .05between .05 and .10between .10 and .20greater than .20Item 5
c. Select your own level of significance. What is your conclusion?
In: Statistics and Probability
DataSpan, Inc., automated its plant at the start of the current year and installed a flexible manufacturing system. The company is also evaluating its suppliers and moving toward Lean Production. Many adjustment problems have been encountered, including problems relating to performance measurement. After much study, the company has decided to use the performance measures below, and it has gathered data relating to these measures for the first four months of operations.
| Month | ||||||||
| 1 | 2 | 3 | 4 | |||||
| Throughput time (days) | ? | ? | ? | ? | ||||
| Delivery cycle time (days) | ? | ? | ? | ? | ||||
| Manufacturing cycle efficiency (MCE) | ? | ? | ? | ? | ||||
| Percentage of on-time deliveries | 90 | % | 84 | % | 81 | % | 78 | % |
| Total sales (units) | 2410 | 2307 | 2189 | 2106 | ||||
Management has asked for your help in computing throughput time, delivery cycle time, and MCE. The following average times have been logged over the last four months:
| Average per Month (in days) | |||||||||
| 1 | 2 | 3 | 4 | ||||||
| Move time per unit | 0.9 | 0.5 | 0.6 | 0.6 | |||||
| Process time per unit | 3.6 | 3.4 | 3.2 | 3.0 | |||||
| Wait time per order before start of production | 18.0 | 19.7 | 23.0 | 24.8 | |||||
| Queue time per unit | 4.7 | 5.5 | 6.4 | 7.4 | |||||
| Inspection time per unit | 0.6 | 0.8 | 0.8 | 0.6 | |||||
Required:
2. Evaluate the company’s performance over the last four months.
In: Accounting
Consider the following information regarding the performance of a money manager in a recent month. The table presents the actual return of each sector of the manager’s portfolio in column (1), the fraction of the portfolio allocated to each sector in column (2), the benchmark or neutral sector allocations in column (3), and the returns of sector indexes in column (4). (1) Actual Return (2) Actual Weight (3) Benchmark Weight (4) Index Return Equity 2.2% 0.50 0.40 2.8% (S&P 500) Bonds 1.1 0.40 0.50 1.7 (Aggregate Bond Index) Cash 0.8 0.10 0.10 0.8 a-1. What was the manager’s return in the month? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Manager’s return % a-2. What was her over or underperformance? (Input the value as positive value. Do not round intermediate calculations. Round your answer to 2 decimal places.) % b. What was the contribution of security selection to relative performance? (Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.) Contribution of security selection % c. What was the contribution of asset allocation to relative performance? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Contribution of asset allocation
In: Finance