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A single-phase, 3-kVA, 220:110-V, 60-Hz transformer has a high-voltage winding resistance of 0.3 Ω, a low-voltage winding resistance of 0.06 Ω, a leakage reactance of 0.8 Ω on its high voltage side, and a leakage reactance of 0.2 Ω on its low-voltage side. The core loss at rated voltage is 45 W, and the copper loss at rated load is 100 W. Neglect the exciting current of the transformer. Find the per-unit voltage regulation when the transformer is supplying full load at 110 V and 0.9 lagging power factor.
A sealed rigid tank of 1 m3 capacity contains 1.2 kg of water at 1 bar and 99.63 °C. To this tank we add heat until the pressure increases to 3 bar. What is the temperature at the end of the heating?
An electric current of 200 A is passed through a stainless steel wire having a radius of 0.001268 m. The length of the wire L is 0.91 m and has a resistance of 0.126 ohms. The outer surface temperature Ts is held at 422.1 K. The average conductivi..
One of the major categories of assistive devices is alternative and augmentative communication devices. Describe the electronic data processing steps needed for text-to-speech conversion. How have the technological advances in personal computing m..
write a report on application of reverse osmosis principles for the desalination of sea water.the consumable water on
How much weight must it bear? Will your add-on lap tray user make the wheelchair user more or less independent? What type of materials should be used?
What is the pesticide concentration in the test sample assuming no other inhibitors or substrates are present?
For total yearly payments of $5000 for 10 years, compare the compound amount accumulated at the end of 10 years if the payments are (a) end-of-year, (b) weekly, and Cc) continuous. The effective (annual) interest is 20 percent and payments are uni..
All other expenses except depreciation would be unchanged. If the old canning unit can be sold for $600, what replacement return on his capital investment will the owner receive if he decides to make the replacement?
Does the total-product-of-labor function TP^1(1) = 32^2exhibit decreasing (marginal) returns to the fixed factor k? Why or why not?
The heat capacity of thereactants and products are 1.95 kJ/kg-K, the volumetric flow rate is 0.33 m3/hr, and the feedtemperature is 20oC. If the conversion is 95%, calculate (a) the reactor size and (b) the temperature of the reaction mixture, ift..
Find the total core loss if the frequency is increased to 400 Hz.
Charge is uniformly distributed around a ring of radius R= 2.40cm and the resulting electric field magnitude E is measured along the ring's central axis (perpendicular to the plane of the ring).
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