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Through a three-phase transmission line, a three phase symmetrical load is supplied from a power system bus. The parameters per phase of the transmission line are: R=5 ohms, X=70 ohms, B=9*10^-4 ohms. With the load terminal voltage magnitude know as 362.25 kilovolts, the load absorbs 200 megawatts at a power factor of 0.9 leading.It is specified that the line has the nominal voltage of 345 kilovolts, a length of 200 km and is to be modeled by a pi symmetrical equivalent circuit. For the given case calculate what magnitude the terminal voltage at the power system bus. (voltages given are line to line)
A non-inverting operational amplifier circuit is constructed to have a gain of 100 with an input signal of 1 kHz. Would you expect the circuit to have the same gain with the input signal of 1 MHz
A dc shunt motor of 50 hp, 250 V is connected to a 230 V supply and is drawing an armature current of 200 A, and is running at speed of 1200 rpm. Its armature resistance is Ra = 0.2 ohms.
the capacitance varies depends on the distance of the two plates from 0 to about 20in. this model is needed to generate an input to an other part of the circuit to simulate it and obtain the output in PSPICE.
A photoresistor is connected series to a battery of 10 V with internal resistance of 5 Ohms. The ohmic resistance of the photoresistor changes by time through the day and expressed as: RLDR=20-(10/t) .
A substance expands from V1 = 1 ft3 to V2 = 6 ft3 in a constant-pressure process at 100 lbf/in2. The initial and final internal energies are U1 = 40 Btu and U2 = 20 Btu, respectively.
design a third-order Butterworth highpass filter with fc=100 Hz and high frequency gain of 20 dB using the standard form of the third-order Butterworth polynomial (s+1)(s^2+s+1)
Let x(t) and y(t) be two real, periodic signals that are orthogonal to each other. Show that the power of the sum of the signals (i.e., x(t) + y(t)) is equal to the sum of the individual powers (i.e., Px + Py).
With |V| = 100 V, the instantaneous power p(t) into a network N has a maximum value 1707 W and a minimum value of -293 W. Find a possible series RL circuit equivalent to N.
The above transformer is to be connected as an auto transformer to supply a load at 120 V from 210 V source. What kVA load can be supplied without exceeding the current rating of the windings
Determine the output frequency for a frequency division circuit that contains 12 flip-flops with an input clock frequency of 20.48 MHz.
explain how you would modify a 4-bit adder circuit to turn it into an Adder/Subtractor circuit. Explain how your creation would do a subtraction operation. Use a circuit diagram to illustrate. For an Adder/subtractor that works with signed numbers
A Whetstone bridge has a strain gage in the lower right leg with a 120 ohm nominal resistance. It is mounted on steel with a Modulus of Elasticity equal to 30x106. The other resistors are equal to 120 ohms.
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