A balanced positive-sequence wye-connected 60-Hz three-phase source has line-to-line voltages of VL = 440 V rms. This source is connected to a balanced wye-connected load. Each phase of the load consists of a 0.5-H inductance in series with a 50-? resistance. Assume that the phase of Van is zero.
A) Find the line-to-neutral voltage phasor Van.
Enter your answer using polar notation. Express argument in degrees.
B) Find the line-to-neutral voltage phasor Vbn.
Enter your answer using polar notation. Express argument in degrees.
C) Find the line-to-neutral voltage phasor Vcn.
Enter your answer using polar notation. Express argument in degrees.
D) Find the line-to-line voltage phasor Vab.
Enter your answer using polar notation. Express argument in degrees.
E) Find the line-to-line voltage phasor Vbc.
Enter your answer using polar notation. Express argument in degrees.
F) Find the line-to-line voltage phasor Vca.
Enter your answer using polar notation. Express argument in degrees.
G) Find the line-current phasor Ia.
Enter your answer using polar notation. Express argument in degrees.
H) Find the line-current phasor Ib.
Enter your answer using polar notation. Express argument in degrees.
I) Find the line-current phasor Ic.
Enter your answer using polar notation. Express argument in degrees.
J) Find the power delivered to the load.
Express your answer using three significant figures and include appropriate units.
K) Find the reactive power delivered to the load.
Express your answer using three significant figures
In: Electrical Engineering
Rate of Return Analysis:
The table below shows the cash flows associated with a certain investment. (a) How many possible rates of return are there for this set of cash flows? (b) Find all the rate of return values for these cash flows between 0% and 100%. Please, explain and show solution procedures.
Year 0 1 2 3 4 5 6
Cash Flow ($) 15,000 -30,000 1500 6000 6000 6000 6000
In: Electrical Engineering
Define appropriate fault detection and protection system in a PV system (mini grid)
In: Electrical Engineering
In: Electrical Engineering
(a) Design a 4-bit ring counter. Use an external asynchronous INIT input to initialize the flip-flops to a valid initial state. Also remember to hook up the CLOCK to all flip-flops.
(b) Design a 4-bit Johnson counter. Use an external asynchronous INIT input to initialize the flip-flops to a valid initial state. Also remember to hook up the CLOCK to all flip-flops.
(c) How many states does the ring counter in part (a) have? How many states does the Johnson counter in part (b) have?
(d) Starting at the initial state, show the repeating counting sequence for both the ring counter in part (a) and the Johnson counter in part (b). (That is, show the state of each counter on a cycle-by-cycle basis until it repeats.)
In: Electrical Engineering
How would we make a schematic design for a vending machine that accept nickels, dimes, and quarters, and sells drinks at 30 cents each? (disregard changes and there is only 1 type of drink) 2 Hexdecimal values must show the current money input (binary to hexadecimal converter is given), and when the value hits 30 or more, reset the current amount to zero, and LED should be lit to represent a successful. For the flip flop, D-flip flop should be used for simplicity.
In: Electrical Engineering
In: Electrical Engineering
For all the requested figures below, use a discrete time range
of n = [0,50] on the x-axis. Remember your script should be
self-sufficient and run without any errors to receive any
points.
You are given a discrete time system (1) below (same system as
Homework 5(a)):
(E - 0.2)(E - 0.4)(E - 0.6) y[n] = (2 - 3E)
x[n]
(1)
Question 1. Compute the impulse response h[n] of system (1) above,
using the recursive solution method. You will not receive any
points for using another method. Given the system input x[n]
defined by equation (2) below, compute the output yr[n] to the
system (1), using h[n] you have just computed and x[n], by discrete
convolution. You will not receive any points for computing yr[n]
using another method.
x[n] = cos( pi x n/32)
u[n]
(2)
Display computed yr[n] together with y[n] you have computed in
Homework 5(a) on the same figure. Display yr[n] in red circles
(‘ro’), and y[n] in blue stars (‘b+’). You are NOT asked to display
h[n], do NOT display h[n]. Do not forget to properly label and
annotate your figure and follow the time range requirement set on
the top of this page. You will not receive full points
otherwise.
Note: Use a stem plot, with the help of the built in Matlab
function “stem()” in order to properly represent a discrete signal
on a figure.
In: Electrical Engineering
Design a 9th order low-pass filter with cut-off ??/ 2
using the Hanning window.
a) Plot its frequency response. b) Express the Input/ Output
relation. c) let ??[??] = {
0
?????? ?? = 0,1,2…..,10 1 , ?????? ?? =
11,12,…..30
Calculate ?? = ?? ? ?. Plot
and comment on the shape of y.
In: Electrical Engineering
A DSB signal is squared to generate a carrier component
that may then be used for demodulation. (A technique
for doing this, namely the phase-locked loop, will
be studied in the next chapter.) Derive an expression that
illustrates the impact of interference on this technique.
In: Electrical Engineering
The goal in this experiment is to implement a 0-12 counter with a test bench that displays the output of each of the flip-flops in the counter. A behavioral code should be written for this experiment.
Set the time format to 1 nanosecond with a precision of 100 picosecond.
In: Electrical Engineering
Signal transduction refers to any process of changing one signal to signal of another type. An example would be a series of pulsing lights into the sound for the word: "Help". Discuss how this transduction could be done by a device.
In: Electrical Engineering
Based on the hardware you designed, write a code that takes temperature measurement every 5 seconds and display the temperature in Fahrenheit degrees in the format of xxx.x (for example: 098.6 or 104.8) on the 4-bank seven-segment LED display.
In: Electrical Engineering
For energy engineers;
Review the mechanical design features materials, construction and so on of two types of energy storage system.
please talk about it deeply like an article. much explanation needed.
In: Electrical Engineering
need a code for mpu 6050 gyro module for arduino
it needs to read the angle of the pendulum and feed information
back into stepper motor to try to attain balance
In: Electrical Engineering