A continuous-time signal x1(t) = 20 sin (100?t) is undersampled at fs = 40 samples/second to form a discrete-time signal x [n] . If the samples in x [n] been instead taken from a continuous-time signal x2(t) at a rate more than twice the highest frequency in x2 (t) , what would be a correct mathematical description of x2(t) ?
What will be an ideal response?
If we add or subtract any integer multiple of the sampling frequency from the frequency of a sinusoid we get exactly the same samples.
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The plant engineer for a large foundry has been asked to calculate the thermal efficiency of the generating plant used by the company to produce electricity for the aluminum melting furnaces. The plant generates 545.6 GJ of electrical energy daily. The plant burns 50 t (tons) of coal a day. The heat of combustion of coal is about 6.2 × 10^6 J/kg (joules/ kilogram). What was the answer? (Efficiency = W/Jheat)
What will be an ideal response?
Name five general occupations in animal science
What will be an ideal response?
?Why might it be easy to cut the wrong line on a part laid out for cutting?
A. ?One person laid it out and another made the cut. B. ?The light in many shops is not very bright and it is hard to see the lines to be cut. C. ?There is no way to identify between a cut, bend, layout, and centerline when making a PAC. D. ?Sometimes scratches on the plate might look like the layout lines of a part to be cut.
Today large businesses opt to build or purchase dark fiber and build their own metro networks used to interconnect remote offices together
Indicate whether the statement is true or false