A vertical shaft Kaplan turbine operating under a head of 9.8 m has a runner diameter of 9.3 m. At the maximum optimum point, the turbine runs at 51.7 rpm and develops 45,000 kW power discharging 535 m 3 /s water. Determine the values of unit speed, unit discharge, unit power and specific speed of the turbine. If the critical value of cavitation coefficient for the runner is 0.95, determine the location of the runner with respect to the tail race water level. The atmospheric and saturated vapour pressures may be taken as 9.8 m and 2.5 m respectively. Will the runner be located below or above the tail race water level? [ 59 . 153 ? u N , 989 . 1 ? u Q , 96 . 16 ? u P , 51 . 632 ? s N , 01 . 2 ? ? s H , below] 2. Calculate the diameter, speed and specific speed of a propeller turbine runner to develop 6,250 kW under a head of 5 m, given that the speed ratio Ku based on the outer diameter is 2.10, flow ratio ?=0.65. Assume the diameter of the boss (hub) is 0.35 times the external diameter of the runner and overall efficiency is 85 %. [D = 5.81 m, N = 68.37 rpm, Ns= 722.93] 3. A hydraulic turbine develops 130 kW at 230 rpm under a head of 16 m. Determine the scale ratio and the speed of a similar machine which will generate 660 kW when working under a head of 25 m. [Scale ratio (D2/D1) = 1.612, N2 = 178.35 rpm]
In: Mechanical Engineering
1. Identify the correct critical value for tin a two sample (independent), two-tailed test with 30 degrees of freedom at a .05level of significance.
2. Identify the correct critical value for tin a two sample (independent), one-tailed test with 40 degrees of freedom at a .01level of significance.
3. The level of significance (a) represents the probability of making a(n) _____________.
4.A Type I error can be described as
.
In: Statistics and Probability
Firm ABC’s projected cash flows are as follows
|
Year |
1 |
2 |
3 |
4 and 4+ |
|
CF |
3,000 |
5,000 |
8,000 |
Grow at g = 1% forever |
We can choose one of the following two capital structure plans:
|
Debt |
Equity |
|
|
Plan A |
20% |
80% |
|
Plan B |
50% |
50% |
|
Plan C |
70% |
30% |
The cost of debt are as follows
|
Debt |
Cost of debt |
|
|
Plan A |
20% |
risk-free rate + 0.5% |
|
Plan B |
50% |
risk-free rate + 1% |
|
Plan C |
70% |
risk-free rate + 3% |
The firm’s unlevered beta is 0.8, tax rate is 40%. Market return is 9%.
To calculate risk-free rate, we have the following information.
The 10-year Treasury bond with par value $100, annual coupon rate 3.125%, 10-year to maturity, is selling at $90.
What is the highest possible firm value?
| a |
117,613.91 |
|
| b |
121,494.40 |
|
| c |
139,027.85 |
|
| d |
129,035.03 |
In: Finance
Chapter: Real Property and Land Use
5. A life estate is not an actual form of ownership of land, it is actually a form of lease arrangement.True/False
6. An easement is not an ownership interest in land, it is just a "burden" on another person's estate.True/False
7. A "tenancy-in-common" and a "joint tenancy" are two types of joint ownership arrangements where a piece of property is owned by more than one person. True/False
8. A quitclaim deed is not a deed at all, it is actually a mortgage or lien document. True/False
In: Operations Management
Answer True or False
5. According to the trade model of David Ricardo, the direction of trade is determined by absolute advantage.
6. Adam Smith and David Ricardo reasoned that in a world of two countries, at least one country will be worse off as the result of trade.
7. A country with high wages can export to a country with low wages, given sufficiently high labor productivity in the exporting country.
8. According to the mercantilists, a nation's welfare would improve if it maintained a surplus of exports over imports.
In: Economics
8. Suppose Robina Bank receives a deposit of $55,589 and the reserve requirement is 7%. Answer the questions using this information.
Round your answers to two decimal places.
What is the amount that Robina Bank must keep on hand as
required by the Federal Reserve (Fed)?
keep on hand: $
What is the amount that Robina Bank must have in excess reserves
from this initial deposit?
excess reserves: $
What is the total change in the M1 money supply from this one deposit?
total change: $
In: Economics
A prime number is an integer greater than 1 that is evenly divisible by only 1 and itself. For example, 2, 3, 5, and 7 are prime numbers, but 4, 6, 8, and 9 are not. Create a PrimeNumber application that prompts the user for a number and then displays a message indicating whether the number is prime or not. Hint: The % operator can be used to determine if one number is evenly divisible by another.
b) Modify the application to prompt the user for two numbers and then display the prime numbers between those numbers.
( Java programming )
In: Computer Science
Consider the following time series.
| t | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| yt | 125 | 108 | 102 | 99 | 94 | 92 | 86 |
| (b) | Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series. |
| If required, round your answers to two decimal places. | |
| y-intercept, b0 = | |
| Slope, b1 = | |
| MSE = | |
| (c) | What is the forecast for t = 8? |
| If required, round your answer to one decimal place. | |
In: Statistics and Probability
5. Identify any one (1) genetic disorder not caused by nondisjunction. Explain why.
6). Given that Phenylketonuria (PKU) is inherited as a recessive trait. What is the chance for two heterozygous parents to have a phenylalanine-sensitive child? Explain.
7). Given a mating between a non-hemophiliac male & a heterozygous female what is the probability for a hemophiliac female child? Explain.
8). Given a mating between an albino male & a carrier female, what is the probability for a child who is a carrier for albinism? Explain.
In: Anatomy and Physiology
A firm is considering replacing the existing industrial air conditioning unit. They will pick one of two units. The first, the AC360, costs $26,468.00 to install, $5,014.00 to operate per year for 7 years at which time it will be sold for $7,062.00. The second, RayCool 8, costs $41,121.00 to install, $2,143.00 to operate per year for 5 years at which time it will be sold for $9,074.00. The firm’s cost of capital is 5.40%. What is the equivalent annual cost of the AC360?
Answer Format: Currency: Round to: 2 decimal places.
In: Finance