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1. A 400-V DC shunt motor has ?eld and armature resistances of respectively 100 and 0.1 Ω. If the motor absorbs 40 kW from the electric grid, calculate:
(a) the line, armature, and ?eld current(b) the electromotive force(c) the ef?ciency
2. The 400-V DC motor of the previous exercise is running at 1100 rpm and absorbing a line current of 80 A. Calculate the torque developed and the ef?ciency.
Is there meaningful relationship between grades and SAT scores? If student scores 450 on the SAT, what do youbelieve his or her GPA will be?
one of the issues facing organizations is increasing biodiversity throughout the organization. once of the ways to
If sample of size 10 packages is randomly chosen, and 5 percent rate holds, determine the probability that exactly 2 packages in the sample arrive late?
You are estimating the fuel consumption (gallons per mile) for intermediate armored vehicles based on the horsepower of the vehicle. The vehicle for which you are estimating has 4.29 hundred horsepower.
Editors of the business report in Exercise 12 are willing to accept a margin of error of 4% but want 99% confidence. How many randomly selected employers will they need to contact?
the table below represents the total number of patients who were readmitted to critical hospital within 30 days of
Express the probability as a decimal
a sports league is making up their season schedule. the league has 12 teams with eight teams from la and the rest from
If hypothesis test for single population variance is to be conducted by using significance level of to 0.10, a sample size of n = 16, and test is a one-tailed upper-tail test, the critical value is?
Using the five steps of hypothesis testing and the 5% significance level (alpha), does showing the film change students' attitudes towards the chronically mentally ill?
The industry standard suggests that 10% of new vehicles require warranty service within the first year. Jones Nissan in Sumter, South California, sold 12 Nissans yesterday. What is the probability that none of these vehicles require warranty servic..
the average tenure of technicians at abc company is 10 years with a standard deviation of 5 years. calculate the
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