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A single phase, 50 kVA, 2400/240 v, 60Hz, distribution transformer is used as a step down transformer at the load end of a 2400 v feeder whose series impedance is (1.0 +j2.0) ohms. The equivalent series impedance of the transformer is (1.0 +j2.5) ohms referred to the high side. The transformer is delivering rated load at 0.8 power factor leading and at rated secondary voltage. Neglecting the transformer exciting current. Determine following:
1. The voltage at the transformer primary terminals2. the voltage at the sending end of the feeder3. the real and reactive power delivered to the sending end of the feeder
Draw schematic for a Bridge (full-wave) peak-rectifier capable of providing de output voltage of 12V with a ±1 V ripple and a load current of 0.5A. Calculate the transformer ratio, the filter capacitor value, and the PIV for the diodes.
Create a cron file that will regularly perform the following backups:?
Design an amplifier circuit that will selectively amplify dolphin social conversations. The microphone can be modeled as a sinusoidal voltage source with peak amplitude less than 15 mV in series with a 1 ohm resistor.
For a unity feedback control system, the forward path transfer function is: G(s) = 20/(s^2 + 14s +50) a. Determine the steady-state error for a unit step input. b. Find the steady-state error for a unit ramp input using the Final Value Theorem.
Design a filter for a biomedical instrument to eliminate DC (f = 0), 500 Hz tone, and its corresponding harmonics. The system sampling rate is 2,000 Hz. Place all the required poles at the origin to obtain a FIR filter.
Find the magnitude and phase angle of the load reflection coefficient, the maxima and minima of the total voltage and of the current of the line and their locations, and the standing wave ratio of the line, and sketch the voltage and current stand..
in a p+-n junction, the n side has a donor concentration of 10^16 cm^-3. if ni=10^10cm^-3, the relative dielectric constant εr = 12, dn=50cm^2/s, Dp = 20cm^2/s, and the electron and hole minority carriers have lifetimes τ=100ns
Induction motor Y connection at 60Hz with the following: A.) 400 kVA induction motor running at 80% load with effeciency of 96% and p.f.=.88 b.) 40kW resistance heating source
A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of 2.5 cm, with a spacing 3.6m between centers. a)Determine the total line inductance in mH/m.
A balanced D-connected load is fed by a three-phase supply for which phase C is open and phase A is carrying a current of 10
Design and draw the schematic for a conventional hardwired circuit that will perform the following circuit functions using to two break-make push buttons: Turn on light L1 when pushbutton PB1 is pressed
In most situations it is also desirable to send information from the process to be controlled--in this case the 500-gallon tank--to a central station for processing and storage. This information can be transmitted and processed in different ways.
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