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a) Compute and plot the 128 point FFT of a 0.125Hz cosine wave:
1) Set t=0:1/16:80;
2) Set t=0:2/16:80;
Compare the differences in the FFT result. Explain why even though the inputs to both FFTs are the same cosine waves, the shapes of the FFTs are different.
b) Calculate and plot the 512-point FFT of the same signal as in part (a), and compare the results.
c) Using the same signal as in part (a), but change the setting to:
1) Set t=0:1/16:8;
2) Set t=0:2/16:8;
Calculate, plot and compare the results of the 512-point FFT of the above signal. What is unique about the way it looks and why?
Two data streams are coming serially to a system. These two streams are carefully observed and if considering any three bits from each stream, we observe that these two input streams are equal ; the FSM gives a signal to an alarm system.
Each phase of the load consists of an impedance of 30 + j40 *. Find the linetoneutral voltage phasors, the line-to-line voltage phasors, the line-current phasors, the power, and the reactive power delivered to the load.
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A 6 pole, 60 hz induction motor is wye connected and has a rated slip of .03 with the follwoing parameters: Rs=0.5 ohms, Rr'=0.3ohms, Xs=J1 ohms, Xr'=J0.35 ohms, Xm=j20 ohmsand the total rotational losses=7300 watts.
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An engineer needs to detect a binary strings of any length or composition provided that each contains at least one substring of "1101". a) Draw the state diagram of this finite state machine.
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