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120V, 60 Hz source is connected to a distribution line whose resistance, and inductive reactance is 0.001Ohm, j0.002 Ohm, respectively. Single phase, 100HP, 120V, 0.85 pf. motor and 100Kw, 120V heater are connected in parallel.Find• current flowing in each load before connecting the capacitor and after connecting capacitor,• Line losses before connecting the capacitor and after connecting capacitor,• power factor of the source before connecting the capacitor and after connecting capacitor,• Power consumed by the load before connecting capacitor and after,• Total impedance of the circuit before connecting capacitor and after,• The value of the capacitor to improve the power factor to unity. (connect the capacitor in parallel with the load to improve the power factor)
The junction capacitance of a silicon pn junction is 1.83 pF at T = 300 K when the anode and cathode are held at the same voltage. The concentration of donor atoms in the n-region of the junction is 1016 cm ^-3
A three 120 - V power line is Y-connected. The three phase outputs are marked as a,b,c. The neutral is marked as n. The phase sequence is abc. It is connected to a balanced Y- connected load, with the impedance is 12 + j 9 omega.
To keep them running, some users created their own 25 Hz power in the plant using motor-generator sets. A motor-generator set consists of two machines connected on a common shaft, one acting as a motor and the other acting as a generator.
The current flowing through a 300-mH inductance is given by 5e(-200t). Find expressions for the voltage, power, and stored energy. Sketch the waveforms to scale for 0
The voltage output from a two active gage of Wheatstone bridge was 3.5 mV. The excitation voltage was 5 V. Nominal resistance of the strain gage was 350 ohms and the gage factor was 2.05. Calculate the force in pounds on the steel rod.
A two-wire air line has the following line parameters: R = 0.404 (m/m), L= 2.0(µH/m),G= 0, and C= 5.56 (pF/m). For operation at 5 kHz, determine (a) the attenuation constant a,(b)the phase constant ß, (c) the phase velocity u,
An opera glass uses an objective and eyepiece with focal lengths of +12 cm and -4.0, respectively. Determine the length (lens separation) of the instrument and its magnifying power for a viewer whose eyes are focused (a) for infinity and (b) for a..
Calculate the PMOS device with to acheive symmetric propagation delays in an inverter (tPLH = tPHL). Use Wn=450nm Ln =300nm and Lp=300nm and solve for Wp. So I think by some ratio I can find what Wp should be, maybe something like Wn/Ln=Wn/Lp
Describe the characteristics of the series RC filter circuit with the outpu across the resistive component. Distinguish the pass and stop bands with reference to the cutoff frequency. Also state what happens to the circuit complex impedance at the..
An ideal one sided silicon n+p junction has uniform doping on both sides of the abrupt junction. The doping relation is Nd=50Na. the built in potential barrier is Vbi=0.752 V. the maximum electric field in the junction is Emax=1.14*10^5 V/cm for a..
a 10uF capacitor is plugged into a 110v rms 60 hz voltage source with an ammeter in series. what is the rms value of the current through the capacitor?
The cylindrical coaxial cable with the cross section shown below, has inner and outer radii of 5mm and 15mm respectively. The dielectric parameters are; er=2, signma=5*10^(-10) S/m and Ur=1
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