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A 3-phase synchronous generator has a directaxis synchronous reactance of 0.8 pu and a quadrature-axis synchronous reactance of 0.5 pu. The generator is supplying full-load at 0.8 lagging pf at 1.0 pu terminal voltage. Calculate the power angle and the no-load voltage if excitation remains unchanged.
a thin-walled cylindrical pressure vessel of 250 mm internal diameter and 5 mm thickness is subjected to an internal
a company has decided to install a new production facility for one of its products. the company is considering three
A geothermal power plant uses geothermal liquid water at 160°C at a rate of 440 kg/s as the heat source, and produces 14 MW of net power in an environment at 25°C. If 18.5 MW of energy entering the plant with the geothermal water is destructed wit..
Air at 127°C flows over the plate with a heat transfer convection coefficient of 15 W/m2 · K. Determine the emissivity, absorptivity, and radiosity of the plate. What is the net heat transfer rate per unit area?
the uniform beam ab in figure 12.39 has a mass of 900 ibm. g sub l is equal to 32.1740 ftsecsec.a. for a force f of
The asymmetric simple truss is loaded as shown. Determine the reactions at A and D. Neglect the weight of the structure compared with the applied loads. Is the knowledge of the size of the structure necessary?
Calcium Silicate has replaced asbestos as the preferred insulation for steam lines in power plants. Consider a 40 cm O.D., 4 cm wall thickness steel steam line insulated with a 12 cm thickness of calcium silicate. The insulation is protected from dam..
By expanding Krel/Kcl in powers of v2/c2, estimate the value of v2/c2 for which Krel differs from Kcl by 10 percent.
two identical cars a and b are at rest on a loading dock with brakes released. car c of a slightly different style but
Are the following detectors mass or concentration sensitive?
(a) the mass flow rate of steam entering the first stage of the turbine, in lb/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the thermal efficiency.
The water experiences a temperature rise of 8°C. The air leaves the cooling section saturated at 20°C. Determine (a) the rate of heat transfer, (b) the mass flow rate of the water, and (c) the exit velocity of the air stream.
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