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A 3-kVA, 220:110-V, 60-Hz single-phase transformer yields this test data
open-circuit test: 200 V, 1.4 A, 50 W
short-Circuit test: 4.5 V, 13.64 A, 30 W
Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor lagging.
The vapor pressure of ethanol is 400 mmHg at 63.5 degree celsius. Its molar heat of vaporization is 39.3 kJ/mol. What vapor pressure of ethanol, in mmHg, at 34.9 degree celsius
A cylindrical storage tank has a radius of 1.04 m. When filled to a height of 3.64 m, What is the density of the solvent
Identify five controls that require the operator to do two destict actions in order to activate the control? EXAMPLE depressing the clutch on a car so that the ignition key will start the car.
The bitter-tasting compound quinine is a component of tonic water and is used as a protection against malaria. It contains only C, H, N and O. When a sample of mass 0.487 g was burned, 1.321 g of carbon dioxide, 0.325 g of water, and 0.0421 g of n..
Calculate the at-rest earth pressure (po) exerted at the base of the wall and plot the wall pressure diagram and show the location on the wall where the resultant force Po acts.
You believe your unknown compound is acetanilide that melts at 114-115 degrees, so you ask your professor for a sample of the pure compound to do a mixed melting point. You do the experiment and determine the mixed melting point is 106-110 degrees..
(a) the conductivity in a p type silicon semiconductor at T=300 K is sigma=0.25 (ohm-cm)^-1. Determine the thermal equilibrium values of electron and hole concentrations. (b) Repeat part (a) for n type GaAs semiconductor if the resistivity is rho=..
A researcher is asked to determine whether or not a productivity objective (in dollars) of better than $75,000 per employee is possible. A productivity test is done involving 20 employees. What conclusion would you reach? The sales results are as fol..
Implement the carry-out and sum functions for a 1-bit full adder using a 3-to-8 decoder block with active-low outputs and additional gates (what gate types should be used). Complete the truth table and draw the circuit diagram
Two identical diverging lenses are separated by 15 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens on the right
Assume the average energy density of sunlight to be 800 w/m^2 ---and the overall photovolatic system efficiency to be 10 percent. Calculate the land area covered with photovolatic cells needed to produce 1000 Mw , the size of a typical large centr..
DC Load Line and Q-Point can only be located within the active region of a BJT. What are the boundaries of the active region. What characteristics of BJT determine this boundary.
ts diode acts as a constant 1.0 V drop. the input voltage is 12.0 V. tje ;pad os a 4 ohm resistor. what is the highest possible output voltage magnitude, and at what value duty ratio does it occur
Using many resistors and the DMM, try to determine what digits each colour band represents. Briefly explain your method and your findings in the space below.
Calculate the inductive reactance per meter of a single-phase, 50-Hz, two-wire transmission line. Assume each conductor's radius is 9cm and the distance between the two conductors is 5m.
The signal m(t)=6sin(2*pi*t) volts is transmitted using 4-bit binary PCM system. The quantizer is of the midriser type, with a step size of 1v
A sensor provides temperature data as 360 uV/C. Develop a comparator circuit that goes high when the temperature reaches 530 C
Write a program to create an array initialized with Hex digits in the ROM space. The main code should copy this array to a different array in the RAM space.
obtain, via the bilinear transform, the coefficients of a digtal filter that is maximally flat in the passband, 0 to 4 kHz, and has an attenuation of at least 25 dB at frequencies over 10 kHz. Assume a sampling frequency of 32 kHz.
For a device with a failure probability of 0.02 when subjected to a specific test environment, use the binomial distribution to calculate the probabilities that a test sample of 25 devices will contain (a) no failures; (b) one failure; (c) more th..
Let x[n] be a signal and let y[n]=Σx[m], where m is from -∞ to n. If Y(jΩ) =cos2Ω, x[n] consists of exactly four impulses. What are their numerical strength and locations
Write a MATLAB function that will perform a single interpolation given five numbers are input arguments and return the interpolated values as the only function output. Write a MATLAB program that will calculate the following scenarios.
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