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An autotransformer is used to connect a 12.6-kV distribution line to a 13.8-kV distribution line. It must be capable of handling 2000 kVA. There are three phases, connected Y-Y with their neutrals solidly grounded.
(a) What must the NC / NSE turns ratio be to accomplish this connection?
(b) How much apparent power must the windings of each autotransformer handle?
(c) If one of the autotransformers were reconnected as an ordinary transformer, what would its ratings be?
Assume the phone to be hand-held(i.e no pencil -beam emitted, fold-out antennas might be an option) and a LEP (low earth orbit) satellite at a height of 780KM. Keep in mind that a LEO satellite is moving with respect to earth's surface. Pick state..
A charge of 4 micro-Coulomb is applied to the surface of the car. If the car travels a distance of 2 meter between the two electrodes, and if the mass of the car is 200 grams, then what is the approximate time taken by the car to reach the second ..
a transmission line is characterized by an effective signal wave frontvelocity of Vw=c/3. calculate the time delay required in pico seconds for a signal to propagate end to end on a line that is 30cm long.
a four pole, series motor runs at 900rev/min when taking 30A from a 230V supply. the total resistance ofthe armature and the series field is 0.8Ω. Calculate the additional series resistance required to reduce the speed to 500rev/min if the torque ..
For a RLC Circuit: V=110V (rms) at 50Hz; R=5 ohms; L=50mH; C=0.1 mF; find the impedance, current, voltage across R parallel to C, peak electric energy, peak magnetic energy and stored energy.
Once INIT is negated, Z should remain 0 until X has been 0 for two successive ticks and 1 for two successive ticks, regardless of the order of occurrence. Then Z should go to 1 and remain 1 until INIT is asserted again.
Discuss the differences between, advantages and disadvantages of the following types of grounding systems: ungrounded, solidly grounded and high resistance grounded systems.
1. Find the stress in both members shown below.
A 10 H inductor is connected in series with a 1.0k(ohm) resistor and a switch which closes at t=0s, Determine the voltage across the inductor and the current through the inductor for t>0 if the inductor has an initial current of 10 A.
design and implement a C++ program to simulate a game of Blackjack between two to four players. Your program must incorporate a two-dimensional array to represent the suit and the value of each card dealt to a player,
Suppose a 74LVC1G373 latch is used with VCC=3.3V. OE ispermanently tied to logic 0 and LE is permanently tied to logic 1.Also, the load capacitance is 15pF. Assume the D-input is connectedto a 30% duty cycle clock signal.
The voltage across the load must remain between 4.7 and 5.0 V for all values of load current. Design a voltage-divider network to supply the load. You may assume that resistors of any value desired are available.
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