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If the source impedance at a 13.2 kV distribution substation bus is (0.5 + j1.5) Ω per phase, compute the RMS and maximum peak instantaneous value of the fault current, for a balanced three-phase fault.
For the system (X/R) ratio of 3.0, the asymmetrical factor is 1.9495 and the time of peak is 7.1 ms (see Problem 7.4).
Comment on the withstanding peak current capability to which all substation electrical equipment need to be designed.
"This is the true joy in life, being used for a purpose recognized by yourself as a mighty one, being thoroughly worn out before you are thrown on the scrap heap, being a force of nature instead of a feverish little clod of ailments and grievances..
If the probability of Caesarean birth is 0.30, and 140 in a sample of 500 births are Caesarean, which of these numbers is n?
ENG1068 Electronic Instrumentation Assignment. Assuming that you have an ac power source of 10V (60Hz). Design a silicon based filtered full-wave bridge rectifier circuit that gives dc voltage output Vdc, varying at most ±5%. Calculate the required..
Calculate the current generated in a 10-mm-long, 10.0 × 10-6-m-diameter polypyrrole filament that is subjected to a electric field gradient of 12 V. Assume that the conductivity of oxidized polypyrrole is (b) One drawback for this application is ..
In the lab project, you will be applying the knowledge acquired in this course to design basic mathematical and signal processing operations.
If the barrel floats, what fraction of its volume will be above the water surface? If it sinks, what minimum tension would have to be exerted by a rope to haul the barrel up from the ocean floor?
Calculate the present equivalent value of the machine and the contribution to the cost of processing the material, per kg, resulting from the capital cost of the machine.
Explain how the weighing scale you have dissected works. Sketch free-hand an alternative design for the artifact. Write a one-page essay about how your design works.
Greeco- Persian wars were a series of conflicts between Greece city states and Persian Empire between 500 BC and 448 BC. The beginning of the conflict could be seen with the conquest of Asia Minor by the Persians
A medical facility treats non-emergency patients. Patients arrive according to an exponential interarrival time with a mean of 15 minutes. Upon arrival they check in at a registration desk staffed by a single nurse. Registration times follow a tri..
Describe a time you demonstrated resistance at work. Why did you resist? What was the outcome?
A uniformly loaded square crate is released from rest with its corner D directly above A; it rotates about A until its corner B strikes the floor, and then rotates about B. The floor is sufficiently rough to prevent slipping and the impact at B is..
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