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A 3phase transmission line 200 km long has the following constants •Resistance / phase / km=0.16 ohms•Reactance/phase/km= 0.25 ohms•Shunt admittance/ phase/ km =1.5 *10-6 S.
Calculate by rigorous method the sending end voltage and current when the line is delivering a load of 20 MW at 0.8 p.f. lagging. The receiving end voltage is kept constant at 110 kV.
The total charge accumulated by a certain device is given by as a function of timeby q=18t2-2t4 ( in SI units). What is the max charge in the interval 0
Design a DC power supply that provides -95v +/- 5v to a 2 amp load (energy absorber). The input source is a 100 volt peak sinusoid, 60 Hz. You may use any circuit element we've studied. State the values of all circuit elements
Show how to implement this expression if only gates with at most 4 inputs can be used. Rewrite the expression for c8 using parentheses to show the associated grouping of inputs. Sketch and label the corresponding circuit and determine its cost. The ..
Determine the lower critical frequeircy and label this poirrt otl your graph. Determine the upper critical frequency and label this point on your graph.
a change in the coil over a period of 4mSec causes total flux in the core to decrease at a constant rate by a total of 0.10 mWb. What voltage is induced in the 1000 turn coil by the change in flux.
A separately excited DC motor runs at1500 rpm under no load with 200 V applied to the armature.The field voltage is maintain at its rated value. The speed of the motor, when it delivers a torque of 5 Nm ,is 1400 rpm.
If you are asked to build an 8 bit odd parity generator/ checker with the output ERROR=1. when there is a 1 bit error, which type of gates, XOR or XNOR is simpler to use Explain
Measurments taken of a square-wave signal using a frequency-selective voltmeter(called a spectrum analyzer) show its spectrum to contain adjacent components(spectral lines) at 98KHz and 126 KHz of amplitudes 63 mV and 49 mV
How to Convert Capacitor Farads into kVAR & Vice Versa ?
R- 1k ohm; L=1nH for the circuit represented in Fig. 8.1, and with the knowledge that i(0) = -3mA: a) Write an expression for i(t) valid for all t>=0 b) Compute i(t) at t=0, t=1ps, 2ps, and 5ps
series-parallel magnetic circuit with air-gap. the thickness of the magnetic core is 2cm. the value of magnetic flux
(B). Calculate flatband voltage Vfb and sketch the band diagram at flat band. Label relevant values such as band offset and Fermi level offset.(C). Calculate threshold voltage VT and sketch the band diagram at the onset of strong inversion (defined i..
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