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At t = t0, the voltage across a certain capacitance C is zero. A pulse of current flows through the capacitance between t0 and t0 +?t, and the voltage across the capacitance increases to V f . What can you say about the peak amplitude Im and area under the pulse waveform (i.e., current versus time)? What are the units and physical significance of the area under the pulse? What must happen to the peak amplitude and area under the pulse as ?t approaches zero, assuming that V f remains the same?
Each pole of a 100kW, 250v flet-compound generator has a shunt field of 2000 turns and a series field of 7 turns. If the total shunt field resistance is 100 ohms
a voltmeter is used to measure a known voltage of 100 v. twelve percent of the readings are within 0.5 v of the true
Determine and compare the intrinsic impedance, attenuation constant, and skin depth of copper [σcu =5.80 × 10^7 (S/m)], silver[σag=6.15 × 10^7 (S/m)], and brass[σbr=1.59 × 10^7 (S/m)]
(a) Find the locus of the closed-loop roots (poles) with respect to K; (b) Is there a value of K that will cause all roots to have a damping ratio greater than 0.5 (c) Find the values of K that yield closed-loop poles with the damping ratio
A three phase synchronous motor has the synchronous reactance of 2.1 Ohm and draws 250 A with a lagging power factor for an excitation voltage of 1327 -15 degree per phase. Find the terminal voltage of the motor and power factor of the motor.
Design a circuit, and model using HDL that 1) adds two three bit unsigned binary numbers, 2) includes a flag to determine when a overflow occurs, and 3) includes a flag indicating whether the resulting sum is even or odd.
The objective of this laboratory is to determine the mathematical model of a DC motor which will be used in the subsequent labs to control the velocity and position of a physical system.
Design an analog divider circuit with a minimum number of op amps with Vo = f(V1/V2) where V1 and V2 are inputs of the circuit and Vo is the output and derive Vo in terms of V1 and V2 and the circuit elements.
Draw an accurate phasor diagram of the four voltages from the R-L-Ccircuit. Derive three expressions for the phase angle between Vsand Vr from the phasor diagram.
Using a shorted stub to match load, what is the lenght of the line where the normalized input Y is 1 + jb . If the characteristic impedance of the shorted line is 40 ohms, what is the length of the stub length.
A 150-KW, 300 V shunt generator has Ra= 0.1ohms and Rf=60ohms, If the generator operates at the rated voltage, calculate the induced voltage at (a) full-load (b) half-full load (which means the load current is half)
create a ladder program to control a washing machine. this washing machine would have a fill cycle to one level a 10
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