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A 22000 V, 60 Hz generator is connected to the high voltage side of a 22000-2200V, 500 kVA step down transformer. If the resultant core flux is 0.0683 Wb (max), determine:A) the number of turns of wire in the secondary coil.B) the new core flux if the driving voltage is increased by 20 percent and the frequency is decreased by 5 percent.
a differential protection system with a power transformer 450MVA, 230/115kV, determine: a. The current line on both sides of the power transformer b. Based on these current selection for the cts from the table. c. Set (identify) the corresponding con..
a) Construct a state table and the state graph for the given network. b) What is the the output for the following input secuence X=01011. note: Di and Qi are the input and the output respectively of each D-type flip-flop.
A control system is needed to control a small shopping center parking lot lighting system and the exterior lighting for the building. The design specifications require that the parking lot lighting and the exterior lighting turn on at dusk automat..
A thin conducting wire of length 3w forms a planar equilateral triangle. A Direct current I flows in the wire. Find the magnetic flux density at the center of that triangle.
When the required bandwidth is a large portion of the center frequency, another approach is commonly used for bandpass filter design. An example might be a filter that's required to pass frequencies from 150 Hz all the way to 5 KHz.
Find the charge q as a function of time for the electrical circuit described. Assume that q(0) = 0 and q'(0) = 0 R = 20, C = 0.02, L = 2, E(t)=35 q"+R/L q'+1/LC q=1/L E(t) where R is resistance (in Ohms), C is capacitance (in Farads)
The lithographic system A uses KrF excimer laser source (248 nm) while the lithographic system B uses the I-line of a Hg lamp (365 nm) as the photon source. Give two main shortcomings of the e-beam lithography
An inverting amplifier is built using an opamp that has a 2V internal offset voltage. (You may consider the opamp ideal otherwise). The circuit uses a feed-back resistor of 2K and an input resistor of 1K. If a 2V input is given to the amplifier
A separately excited dc generator produces 400 v at 1500 rpm under open circuit conditions. Find the induced emf if the speed changes to 2000 rpm. Assume the flux is constant.
Design a combinational logic circuit which has one output Z and a 4-bit input ABCD representing a binary number. Z should be 1 iff the input is at least 5, but is no greater than 11. Use one OR gate (three inputs) and three AND gates
A traffic light is installed at a junction of a railroad and aroad. The light is controlled by two switches in the rails placed 1mile apart on either side of the junction. A switch is turned onwhen the train is over it and is turned off otherwise.
A transformer has a primary voltage of 115v and a secondary voltage of 24v. If the number of turns in the primary is 345, how many turns are in the secondary?
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