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A two core cable feeds a load at a distance of 750 m from the supply point. Each core has a resistance of 0.01 D. The voltage at the load end of the cable is 275 V. The power delivered to the load is 22.5 kW and the power factor is 0.75 lagging.
Determine:
(a) The current in the cable.
(b) The losses in the cable
(c) The supply voltage.
(d) The cable's input power
The battery is made by connecting 5 unit cells in series and then by connecting 7 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 3.4 Ohm.
A DSP engineer applies DFT to 500 data samples that are sampled at 250 Hz to plot the signal spectrum. What is the frequency that corresponds to the frequency bin number
How can you design a high gain (at least 20dB) operational amplifier with only pmos transistors In most designs, they include both nmos and pmos transistors. Is it possible to substitute the pmos for the nmos
In 1988, the average wage rate was $9.45 an hour and in 2008 the average wage rate was $18.00 an hour. The CPI in 1988 was 118.3 and in 2008 it was 215.3 . Which real wage rate is higher?
A cuboid of Germanium (Ge) has contacts all over its 2 x 1 mmends and point contacts exactly half way along its 5 mm length, atthe center of the 5 x 1mm faces. A magnetic field can be appliedparallel to this face.
An analog signal has a bandwidth of 37 kHz and must be digitized in an ADC. The peak voltage is 7V and you need to maintain a resolution of 0.078V. Find the number of bits per sample and then
Write the mathlab program to plot the modulation index necessary to keep the Vdc constant at 1200v when the input power factor angle is varied from -60 degrees to 60 degrees.
if a 2.000Å (.2nm) photon interacts with the bound electron in an hydrogen atom (binding energy 13.6 eV) with a Compton collision. The electron moves forward in the same direction as the incident photon. It may be convenient to use hc 12408eV
The woofer can be modeled as a series R-L low pass filter. Suppose that a given woofer has an inductance of 750 micron Hertz and a resistance of 4 Ohms. At what frequncy (in Hertz) does its frequncy response
A 34.3 kg child starting from rest slides down a water slide with a vertical height of 20.3 m. (a) What is the child's speed halfway down the slide's vertical distance (b) What is the child's speed three-quarters of the way down
Given the following next state and output equations for a synchronous sequential circuit:a. Construct the transition table (state table) for the circuit showing present states, next states and outputs. b. Draw a state graph for the circuit.
The system operates properly when exactly one of the sensors has its output equal to 1. An alarm must be raised when two or more sensors have the output equals to 1. Design the simplest circuit that can be used to raise the alarm. Give the cost of..
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