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Three single-phase, 10-kVA, 2400/120-V, 60- Hz transformers are connected to form a three phase, 4160/208-V transformer bank. Each of the single-phase transformers has an equivalent series impedance of 10 + j25 Ω referred to the high-voltage side. The transformer bank is said to deliver 27 kW at 208 V and 0.9 power factor leading.
(a) Draw a schematic diagram of transformer connections, and develop a per-phase equivalent circuit.
(b) Determine the primary current, primary voltage, and power factor.
(c) Compute the voltage regulation.
Write balanced equations for the combustion of each component of the fuel gas.
The unit cell for Cr2O3 has hexagonal symmetry with lattice parameters a = 0.4961 nm and c = 1.360 nm. If the density of this material is 5.22 g/cm3, calculate its atomic packing factor.
Important information about Vapor pressure, At the top of Long's Peak in the Rocky Mountains (a) what is the vapor pressure if boiling a container of eggs (without a lid) occurs
Draw a block diagram for the controlsystemaste your question here...
Indium antimonide (InSb) is a semiconductor with a narrow band gap of 0.17eV and an intrinsic carrier concentration of 2×1016cm-3. The mobility of electrons in InSb is 78000 cm2/V⋅s and their effective mass is 0.014m0, while the holes have a mobility..
How many kg of benzene are condensed by this process per 1000 m3 of the original mixture if the vapor pressure of at 21.1oC is 75 mm Hg?
Estimate the density of air, If we approximate the atmosphere to be 79% nitrogen (N_2) by volume and 21% oxygen (O_2)
Consider that you are a senior consulting engineer and that you need to explain the topic in a written report to your customer, who is the managing director of a large company, and a commerce or law graduate.
Wet air containing 4.0mole% water vapor is passed through a column of calcium chloride pellets. The pellets adsorb 97.0% of the water and none of the other constituents of the air. The column packing was initially dry and had a mass of 3.40kg, fol..
Neglecting stator resistance, leakage reactance, and all losses, if the stator-to-rotor turns ratio is 2:1 and the applied voltage is 100 V, find the rotor-induced emf at standstill and at 0.05 slip.
At full load and rated voltage, the line current is 40 A, and the flux is 5% less than its no-load value because of armature reaction. Compute the full-load speed.
Calculate the feed rate F and the product rate - Evaporation in Double-Effect Reverse-Feed Evaporators.
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