In: Electrical Engineering
Use D flip-flops and gates to design a binary counter with each of the following repeated binary sequences: (a) 1, 5, 7 (b) 0, 2, 4, 6
(a) Draw the logic diagram (b) Construct Verilog RTL representation for the logics with verification.
In: Electrical Engineering
delta to wye transformer. with the following voltages
what is the phase to ground voltage.
A: 345kv
B: 115kv
C: 34kv
D: 12kv
do the same voltages for wye to delta, delta to delta
and wye to wye transformer.
please show your work. so i could understand the math behind
it.
thank you.
345kv primary to 115kv secondary
115kv primary to 34.5kv secondary
34.5kv primary to 12kv secondary
In: Electrical Engineering
In: Electrical Engineering
The 230V single phase induction motor has the
following integer.
Rs = Rr = 8 ohm, Xs = Xr = 12 ohm, Xm = 200 ohm
When this motor is rotating at 1,728 rpm in normal operation
Find the input current, input power, mechanical conversion power
and induced torque.
Answer
2.60A, 384W, 294W, 1.62N-m
In: Electrical Engineering
Which synthesis method will not work for growing metal nanowires. (You can use a process of elimination to figure this out)
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Catalyst based growth: Involves the use of a metal to facilitate the decomposition of a gas containing the constituent element(s), concentration of those elements in the molten catalyst and precipitation out as a nanowire. |
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Anisotropic growth: Most materials have different growth rates on different crystal faces. This can be exploited to create nanowires by way of optimizing conditions to cause a nanoparticle to grow more along one axis compared to the other directions. |
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Nanopore template growth: Electroplating within the confines of a cylindrical pore in a polymer or alumina film having a diameter in the nm range. The electroplated metal takes on the shape of the pore as it fills it. Dissolution of the film releases the nanowires. |
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Liftoff using standard VLSI techniques: Similar to the template method for growing, this process uses a sacrificial layer to define the geometry of material deposited onto a substrate. One key difference is that this method allows for nanowires that are parallel to the surface to be made. |
In: Electrical Engineering
The equivalent synchronous impedance of a 25kVA,
400V
three-phase Y-connected synchronous generator is 0.05 + j1.6
ohm.
When the rated voltage was output under no load, the rated current
flowed by connecting the load.
Part a)
If the load power factor is 0.8, 1.0 lagging, and 0.8
lagging,
calculate the pull-up voltage, load angle, and voltage fluctuation
rate for each.
Ignore the magnetic saturation.
Part b)
If the power factor is 0.8, 1.0 lagging and 0.8 leading,
when the rated current flows through the generator at the rated
output voltage,
calculate the internal induced power, load angle, and voltage
dynamic for each.
Answer
Part a)
190.4V, 11.26 deg, 21.3%
221.8V, 14.47 deg, 4.1%
259.2V, 11.82 deg, -11.3%
Part b)
270.8V, 9.59 deg, 17.5%
239.8V, 13.93 deg, 3.8%
203.3V, 13.45 deg -12.0%
In: Electrical Engineering
Which of the following is the most appropriate safety procedure that should be adopted for repair and maintenance on electricity systems?
A. Lockout and Tagout (LOTO) Procedures
B. Fire Emergency Response Procedure
C. Hot Work Procedure
D. Confined Spaces Safety Entry Procedure
In: Electrical Engineering
Description of how buses are used within a microprocessor such as the 8-bit AVR used in the Arduino microcontroller A block diagram that shows the 8-bit AVR along with the data and address busses. Use a graphics package such as Fritzing or equivalent
In: Electrical Engineering
Why is it that a carbon nanotube could act as a metal while metallic nanowires that are sufficiently small can behave like a small bandgap semiconductor?
In: Electrical Engineering
Consider a plane wave with rigth-hand circular polarization
travelling in the +y direction in a nonmagnetic lossless dielectric
material. The dielectric constant of this material is 4. The
frequency of the wave is 100 MHz and the electric field amplitude
is 3mV/m. Find the instantaneous expression for E.
I need a clear explanation for this question.
In: Electrical Engineering
(a)If the power factor is improved to unity, find the value of capacitance of the capacitor.
(b)If the power factor improves to 0.96, find the value of capacitance of the capacitor.
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In: Electrical Engineering
Please use a transformer, bridge full-wave rectifier and filter capacitor to design a power supply circuit that converts 60Hz-110V AC to 12V DC.
Please (1) draw a circuit diagram,
(2) calculate the value of the filter capacitor C so that the ripple at the output current of 2A needs to be less than 0.1V,
(3) select the transformer output voltage and estimate the peak voltage of the DC power supply.
In: Electrical Engineering
I need assistance with using Verilog to code the following:
The decoder needs attention. Its function is to take the 10‐bit input, and give three 4‐bit signals. The first 4‐bit signal should be the number of hundreds, the second 4‐bit signal should be the number of tens, and the final 4‐bit signal should be the number of units. In Verilog, these can be calculated simply using the numerical operators, specifically: Divide (/) Modulus(%)
Given:
input[9:0] number
reg[3:0] numb_bcd0, numb_bcd1, numb_bcd2;
numb_bcd0 = number % 4'd10;
//units
numb_bcd1 = (number / 4'd10) %
4'd10; //tenths
numb_bcd2 = ... //hundredths
I am having trouble figuring out how to calculate the hundredths place for numb_bcd2; Thanks for the help!
In: Electrical Engineering
In: Electrical Engineering