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A three-phase steam-turbine synchronous generator is connected to an infinite bus. The generator excitation current is IF=1000 A at the time of synchronization with the bus. The generator has a synchronous reactance of Xs =1.5 per unit. With IF unchanged, the steam valves at the turbine are adjusted until the generator delivers an active power of Pg=0.2 per unit. Assuming the infinite bus is the reference voltage (Vt=1 at angle 0),
a)Find the generator load current
b)With the Pg unchanged, the excitation current is increased to 1600 A. Find the new load current.
What is the energy in joules stored in the capacitor below, The capacitor is shown with 10 volts on each side of it (plus on the left of the capacitor, - on the right), and C = 20 microfarads.
This assignment contains electronics engineering questions like State the commonly found components of a SCADA (Supervisory control and data acquisition) system. and decribe the function of the HMI in a SCADA system.
Given the electric field E=4xux+2yuyV/m find the voltage between the points A(2,0) and B(0,2) integrating along: (a) straight line AB; (b) broken line AOB, where O(0,0).
What is the magnitude of the frequency component at 30 kHz? The square wave is passed through an ideal rectangular low pass filter that completely attenuates all frequencies higher than 35 kHz. Write down an equation for the spectrum at the output ..
The frequency response of an FIR filter is H(ejw)=b0+b1*e^-jw+b2*e^-2jw. In each case below, state whether the filter is highpass, lowpass, bandpass or band stop and draw the pole zero plot.
What is the resistivity of the wire? conductivity? Using the original dimensions of the wire, how much current can you pass through the wire until a 5V signal is degraded 5% or more?
Calculate the numerical value of the mutual capacitance of a square parallel plate capacitor whose dimensions are 1 mm X 1 mm if the two plates are separated by a distance of 2 mm. The relative dielectric constant of the material between the two p..
The resistance per 304.8 m of copper wire uses in the extension cord of AWG 14,12,10,8 and 6 are 2.58,1.62, 1.02, 0.64 and 0.41 respectively. Assume a 2% allowable voltage drop. Show all working .
Addition of two numbers in IEEE 754 format A) a=3f200000, b=be600000 B) a=3f200000, b=ff800000 C) a=01100000, b=80e00000
The purpose of this project is to design a device that would remotely control (from a Bluetooth-enabled mobile phone for instance) at least two actuators (e.g. relays and switches).
Submit an excel spreadsheet with your characterization results, and a screen shot of you amplifier schematics, and your simulation result running a sin wave (Use a vsin for input).
Three-phase inverter has Y-connected load of 10 ohm and 23mH inductance. The inverter frequency is 60Hz and the dc input voltage is 200v. Calculate line voltage rms? , Phase voltage, rms?
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