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A 500-kVA, 60Hz, 5000V, Y-connected, 10 pole synchronous has internal parameters of Armature Resistance 1ohm amd Synchronous Reactance 10ohms. The generator is operating at rated values and 0.9 pf leading. Pmech=10000W, Pcore=5000W, Pstray=1000W
a.) Find the internal induced voltage and torque angle.
b.) Find the input power to the generator in horsepower and watts.
c.) Find the input torque to the generator.
d.) If armature current and field current are kept constant, find the new value of the terminal voltage if the power factor is changed to 0.7 lagging.
Use this table of part c to determine the mean, median, and mode of the grouped data. Compare your results with those in part A, and comment. E. use the frequency table of part C. to determine the variance and the standard deviation of the groupe..
A single phase two winding transformer having rating: 20 KVA,480/120 V, 60 Hz A source connected to the 480 V winding supplies an impedance load connected to 120 V winding. The load absorbs 15 KVA at 0.8 pf lagging when load voltage is118 V.
Suppose that we define the value of the complex constant A as A = -2 + 2j. Write the constant A in magnitude-angle form, that is, find |A| and A such that A = |A|ej A Sketch the real part of the function z(t), where z(t) = Aej(500pit+pi/2).
A bar phantom is imaged by an LSI system which is modeled as an ideal moving average system. The PSF of the system is h(x,y) = rect(x/delta, y/delta) (a) If bar separation of the bar phantom is f what is the output of the imaging system
Write a short technical report on Frequency Division Multiplexing
Dynamic RAM that must be given a refresh cycle 64 times per ms. Each refresh operation requires 150 ns. memory cycle requires 250 ns.
From your group, pick 3 mobile phones, and/or portable devices that are rechargeable. Estimate (using resources and available data), how much electricity that is used to charge them on a weekly basis
What is the equivalent (total) resistance of 100, 200, and 50 resistors connected in series What is the equivalent (total) resistance of 100, 200, and 50 resistors connected in parallel
a dsp system is given with the following specifications: design requirements: sampling rate 20,000 Hz Maximum allowable gain variation from 0 to 4,000 Hz = 2dB 40dB rejection at the frequency of 16000 Hz
The input impedance of a JFET used in COMMON SOURCE configuration, is defined by two considerations: The JFET itself has a VERY HIGH INPUT IMPEDANCE, because the input is the GATE to SOURCE junction that is REVERSE biased
50 kg of a certain gas is contained within a piston-cylinder assembly. the gas undergoes a processwhich the pressure volume relationship is PV = constant. (n=1.5) the given conditions as follows : p1= 6 bars, v1=0.2 cubic meters ,and v2= 0.4 cubic..
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
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