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A generator rated at 13.8 kV and 50,000 kVA is connected to a 75,000 kVA 13.8D/69Y kV transformer. The generator has a subtransient reactance of 25% and the transformer has a reactance of 10%. Before the fault occurs the voltage on the high side of the transformer is 64 kV. The transformer is unloaded. Find the subtransient current in the generator when a three-phase short occurs on the 69 kV side of the transformer.
Determine which of the machines with the following specifications is realizable with a finite number of states. 1) A machine is to produce an output of 1 whenever the number of 1's in the input sequence exceeds the number of 0's.
1. Calculate the frequency for each of the following periods:
Message signal m(t) = 0.6sin(27r3000t + pi/9) For a carrier signal with amplitude Ac = 4,fc = 40MHz, What is the signal bandwidth if we use AM with ka = 0.7 DSB-SC FM with kf = 5000 - HZ/V
What is the difference between a primitive cell and a unit cell? What is the utility of both concepts?
When the field currents of the two generators are equal, one delivers 1200 A at 0.9 PF lagging, while the other delivers 900 A at 0.75 PF lagging.
For each of the unit step responses shown in Figure , find the transfer function of the system.
How to Determine the Number of Lamps in Final Sub Circuit?
If the load in question 7 is connected in a wye, what would be the line voltage and line current supplying the load?
Let X be a zero-mean random variable having a variance of 9 and let Y be another zero-mean random variable. The sum of X and Y has a variance of 29 and the difference of X and Y has a variance of 21.
Given that KG =.0894, w=15.4, φ=-125 degrees and G(s) = [520(s+2)]/[s2(s+30)] design a compensator that gives a PM of 90 degrees and does not change the open loop bandwidth.
a) Find Vo(t),t>0 in the network in fig if the input is represented by the waveform shown in fig.
A three phase motor is connected to a 60Hz electrical source. The motor spins at 600rpm. Find the number of poles in the machine. The output of the above motor is connected to the input of a generator.
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