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·Insulators are a vital part in transmission system they held the overhead transmission line and provide a mechanical support besides they act as an electrical insulator to insulate the line from the supporting system ( pole, tower...etc.)·If you have a 33 kV overhead line, there are three units in the string of insulators.If the capacitance between each insulator pin and earth is 11% of self-capacitance of each insulator.
Determine the time of operation of 5A , 3 Seconds over current relay having a current setting of 150% and a time setting multiplier of 0.8 connected to supply circuit through a 500/5 current transformer when the circuit carries a fualt current ..
An ideal transformer is used for maximum power match of a 2880Ohm load to a source with a Thevenin Equivalent of 18 V and 20Ohms. (a) If the transformer primary has 140turns, how many turns are needed for the secondary
The periodic signal x(t) is dened in one period as x(t) = te^-t; 0
A signals values have a range of +- 5V and you wish to make measurements with an analog quantization size no mate thatn 5mV. What minimum resolution A/D converter is required to perform this risk
Describe how an ideal inductor reacts to steady state DC and why. State the equation for finding the instanteneous current in an inductor during the transient period. Explain each part
What approximate minimum BER is required for voice signals, data signals and what is the approximate BER level for the optical fiber systems ?
What is the purpose of ground wires in over-Head Transmission lines?(with graphical explanation )
The amount of three phase power to be delivered in kW is equal to the total number of letters in your name (first name +last name) and the single phase power is 10% of three phase power. Assume same power factor for both types of loads.
Suppose that a 5 Mbps link is being shared by a number of users. Each user alternates between period of activity during which the user transmits at rate 1 Mbps and periods of silence, when the user does not transmit.
The general belief is that the system exhibits a sharp phase transition from free flowing to fully jammed, as a function of initial density of cars. The existence of this sharp transition has been cited in the scientific literature several hundred..
Your boss asks you to contruct a temperature sensorfor measuring the ambient temp outside (-30degreee celcius
Convert function H(A, B, C) = (AB + C)(AC + B) into both the sum-of-products and product-of-sums forms. Obtain the truth table and express the function in both canonical forms: sum-of-minterms and product-of-Maxterms.
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