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Discuss the different possible conditions under which the fault develops in power system . What are possible causes offaults in transformers ,alternator and transmission lines? what are possible remedies?
Electrons in solids have negative potiental energies with energy of a free electron (this means that these electrons needs to gain energy to liberate themselves from the solids ).
G(s)= K(s-2)(s-4) / s(s+5) Sketch the root locus and find the following: a) Break away and break in points b) The jw-axis crossing points c) The range of gain to keep system stable
a patron of a casino doubts that the dice used in the casino are balanced. During a visit she rolles a die 100 times an got an even number only 30 times. A. formulate the hypothesis you would use to test whether the die is fair.
Determine which waveform in each pair is lagging: a) 6 cos(100πt-1000) and -6 sin (2π60t+1300)b) cos(10t-1000) and - cos(t-1000) c) cos (50πt - 1000) + cos (50πt - 200) and 9 cos (100πt - 200)
The potentiometer is designed to rotate 330 degrees to give the full range of possible resistance. However, the actual measurement range that is used is only 165 degrees indicating positions of a liquid sensor float ranging from 0 to 10 cm (empty ..
A -6-nC point charge is located at the center of a conducting spherical shell. The shell has an inner radius of 2 m, an outer radius of 4 m, and a charge of +7 nC. (Let the radially outward direction be positive.)
The generator voltage is 120 V and the lamp voltage should be 110 V or more. Calculate the current drawn by each lamp if its voltage is 110 V and its power is 100 W. Calculate the current in the two-wire line. Calculate the maximum resistance of t..
Draw the winding on the stator and the winding on the rotor of a three-phase 6-pole synchronous generator which has salient poles. Assume that the stator winding is concentrated for simplicity. Show the values of the conductor angles on the stator..
Power Dissipation Problems, A signal generator outputs a sine wave signal with a frequency of 1000 Hz and an rms voltage of 20.0 V. The output of the spectrum analyzer is connected to a 200 ohm resistor.
Why can't a video signal such as an NTSC analog television signal be transmitted over a two km length of loaded twisted pair cable with a frequency range 300 Hz to 3,400 Hz? What is the bandwidth occupied by an NTSC video signal?
A three 480V system is connected to a balanced three-phase load. The line current I_a is 10A and is in phase with the line-to-line voltage V_bc. Calculate the impedanceof the load for the following a) If the load is wye-connected
Design a 3-bit Incrementer/decrementer use btn_west as incrementer, i.e. when pressed, count increments by 1 use btn_east as decrementer, i.e. when pressed, count decrements by 1 use btn_south as reset, i.e. when pressed the count is resetted to 0.
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