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A balanced three-phase source supplies power to three wye-connected loads, as depicted in the single-phase diagram of Figure 4.34.
The loads areLoad 1:S1 = 38 kVApf1 = 0.7 lagging
Load 2:S2 = 30 kVApf2 = 0.75 leading
Load 3:Unknown
The line voltage at the loads and the line current at the source are 240 V and 150 A, respectively. If the combined power factor at the loads is unity, determine: (a) the real, apparent, and reactive powers of the unknown load; and (b) the pf of the unknown load. (c) Vary the resistive component of Load 3 from 0 to 10 Ω, and determine the resistance that corresponds to a power factor of 0.96.
Suppose you are to construct a logic circuit with inputs {A,B,C} and output {F} The logic is such that "F" is asserted only when "A" or "B" are asserted and "C" is not. First draw and complete the truth table
If only two electrons in the outer orbital shell will distort with anapplied E-field, and both electrons follow the same orbital path asa pair, find the spacing between the center of the nucleus and theaverage location of the electrons when the ap..
In a Wheatstone bridge circuit, precise measurements of very small resistance (0.1 ohm or less) are difficult. List three (3) possible sources of error that are important when measuring small resistances.
Why is the input voltage into the diode in a full-wave rectifier not smooth but the input voltage into the diode in a half-wave rectifier smooth, graphically speaking
Suppose a 12-V battery bank rated at 200 Ah under standard conditions needs to deliver 600 Wh over a 12-h period each day. If they operate at -10 Celsius, how many days of use would they be able to supply
What are the impedances of an inductor and a capacitor (of any value) at a frequency of 0 Hz (DC) and at infinite frequency. Once we know what they are , how can this information help us in analyzing a circuit.
a certain primary cell has a terminal voltage of 1.24 volts when supplying a current of 2a. immediately after the
What is the maximum entropy distribution for this random variable? Justify your answer.
consider a sinusoidal wave with frequency of 300khz as a carrier signal. we want to transmit a sinusoidal signal with
q1 . for the given circuit r20k and c1200pfanbsp is the circuit lpf or hpf?b sketch the frequency response of the
Write C++ statements that accomplish each of the following: a. Declare and initialize int variables x to 25 and y to 18. b. Declare and initialize an int variable temp to 10 and a char variable ch to 'A'. c. Add 5 to the int variable x which alrea..
Find the total impedance Zt, in rectangular and polar.- R1=2 ohms, R2=10 ohms Xc=6 ohms - (B) R1=1k ohm, R2=4k ohms,Xl1=3k ohms,Xl2=7k ohms.
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