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A 100 MVA synchronous generator is connected to a 25kV infinite bus through two parallel transmission lines. The synchronous reactance of the generator is 2.5Ω, and the inductive reactance of each transmission line is 2Ω. The generator delivers 100 MVA to the infinite bus at 0.8 power factor lagging. Suppose a lightning strike causes one of the transmission lines to open. Assume that the mechanical power and excitation of the generator are unchanged. Can the generator still deliver the same amount of power to the infinite bus?
A point charge of -2.00 uC is located in the center of a spherical cavity of radius 6.54 cm inside an insulating spherical charged solid. The charge density in the solid is 7.34×10^-4 C/m^3 .
A vibration trandsucer measures a sinusoidal signal with up to a 100-hz frequency and an amplitude of + and - 5 v. Superimposed on this signal is an additional signal with a freq of 1000 hz. and amplitude of .2
Plot the square-wave approximation by summing the series through the seventh harmonic.
n electrical heater is connected to a constant 250-V sourceand absorbs 1000W. Subsequently, the heater is connected to a constant 220-Vsource. What power does it absorb from the 220-V source. What is the resistance of the heate.
A dielectric material contains 2*10^19 polar molecules/m^3, each of dipole moment 1.8*10^-27 C.m Assuming that all the dipoles are aligned in the direction of the electric field E =10ax V/m, find P and er.
A transformer is used to match an 8 ohm speaker to a 500ohm audio line. What is the turns ratio of the transformer what is the input voltage and output voltage when 15W is being delivered to the speaker
The AC amplitude is on the order of 100 to200 mV. Based on LMH6619, design a circuit that will subtracta DC value and amplify the remaining signal by 100, and places theoutput on a 2.5V DC offset. Design the circuit, perform a SPICE simulation and..
An electron q=1.602E-19 leaves the cathode ray tube (CRT) and travels in a uniform electrostatic field toward the anode, which is at a potential Va=500V with respect to the cathode. What is the work W done by the electostatic field involved in mov..
Explain what voltage regulation is and how it is achieved. Also, describe a specific application of a voltage regulator.
A, B,C and D are members of the board of trustees of an investment company. Decisions are made by the following criterions. A BUY order is placed if: · A, B and D vote no and C votes yes, · Or A and C vote no and rest vote yes,
How good was the hand analysis in determining the appropriate resistor values and what do you think introduced more variation into the design, the more accurate transistor models or the restrictions on the resistor values?
Three resistors R1, R2 and R3 are connected in series and a supply voltage of 240 V. If R2 = 2R1, R3 = 3R1 and the total power taken by the circuit is 480 watts. Calculate the power in each resistor.
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