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The window washers A and B support themselves and the 30-lb uniform plank CD by pulling down on the two ropes. Determine
(a) the tension in each rope; and
(b) the vertical force that each man exerts on the plank.
Consider a three-phase 25-kVA, 440-V, 60-Hz alternator operating at full load (i.e., delivering its rated kVA) under balanced steady-state conditions. Find the magnitudes of the alternator line current and phase current.
The inverted T-beam supports three concentrated loads as shown in the figure. Find the maximum allowable value of P if the bending stresses are not to exceed 3.5 ksi in tension and 8 ksi in compression.
Does fermenting vegetables increase the natural citric acid content since all fruits and vegetables contain it? Thanks for any help you can offer.
Research the impact mining has had on the early history of Australia. In approximately 1,500 words choose an Australian town or city where mining started in the 18th or 19th or even early 20th Century and describe its early history.
Rank the following 3 metals in order of increasing Young's Modulus: W, Cr, Mo. Do not look up the values of Young's Modulus, instead base your answer on what you know about the structure and chemistry of these elements.
100 moles of Benzene (A) and Toluene mixture containing 50% (mole) of Benzene is subjected to a differential distillation at atmospheric pressure till the composition of benzene in the residue is 33%. Calculate the total moles of the mixture disti..
What is the principle of lime Soda process? Give their functions with chemical reactions. 2. Write notes on reverse osmosis and ultra filtration.
Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A, determine the motor speed at a line current of 25 A at 250 V.
Do you suspect that there might have been serious problems with the Student Information System portion of this project as well? Why do you think there seems to be no documentation of problems in this area?
The per-phase equivalent circuit shown in Figure 13.2.6 of a three-phase, 600-V, 60-Hz, four pole, wye-connected, wound-rotor induction motor has the following parameters: R1 = 0.75 Ω, R'2 = 0.80 Ω, Xl1 = X' l2 = 2.0 Ω, and Xm = 50 Ω. Neglect the ..
A man comes home on a summer day and finds that his house is at 35oC. He turns on the air conditioner. In 30 minutes the entire house is at 22oC. If the COP of the air conditioner is 2.8, calculate the powerthat must be supplied to it. Assume the..
The horsepower output from the prime mover to drive the generator at this load.
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