Engineering, 05.05.2020 08:32 mlbaker265
Assume the following LTI system where the input signal is an impulse train (i. e.,x(t)=∑(t−nT0)[infinity]n=−[infin ity].a)Find the Fourier series coefficient of x(t). Then find its Fourier transform and sketch the magnitude and phase spectra. b)Sketch the magnitude and phase spectra of the output (i. e., |Y()|and∡Y()) if the system is a low-pass filter with H()={1||<3020otherise, where 0=2πT0.c)Sketch the magnitude and phase spectra of the output(|Y()|and∡Y()) if the system is a high-pass filter with H()={1||>5020otherise, where 0=2πT0.d)Sketch the magnitude and phase spectra of the outputif the system is a filter with H()=11+j.
Answers: 1
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A21-tooth spur pinion mates with a 28-tooth gear. the diametral pitch is 3 teeth/in and the pressure angle is 20°, find the following values: the addendum, dedendum, circular pitch, tooth thickness, and base circle diameters.
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Engineering, 06.07.2019 02:30
On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)
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Engineering, 06.07.2019 03:10
Oxygen at 300 kpa and 400 k is in a closed system with an initial volume of 0.1 m3. is now compressed in a polytropic process, with exponent of n 1.2, to a temperature of 500 k. calculate: a) the boundary work done during the compression, in kj b) the heat transfer during the compression, in kj
Answers: 3
Assume the following LTI system where the input signal is an impulse train (i. e.,x(t)=∑(t−nT0)[infi...
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