Write python program to plot the zeros and poles if a user provides the coefficients for the numerator and denominator of the transfer function. Since the zeros and poles can be complex, this plot is essentially and argand diagram, where the x axis is the real component and the y axis the imaginary component of a given zero or pole. Create a method called plot-poles zeros(num, den) which takes two lists containing the coefficients. Here is an example and the resulting plot. num [1, 3, 7] # yields zeros at -1.5 +/- 2.17945j den = [1, 4, 5, 3] # yields poles at -2.46557, -0.7672143 +/- 0.7925519j plot_poles_zeros(num, den) Imaginary Page 2 Pole-Zero Plot 3 Zeros ×ばつ Poles 2 1 -2 1 * Real When you write your code you are only allowed to use the packages numpy and matplotlib. Make sure you label the axes, provide a legend and give a title to your plot (See the example plot). Hint: numpy has a method called roots. When given a list of numbers corresponding to the coefficients of a polynomial, it will find the solutions. Make sure you use cross symbol for poles and filled circles for zeros. You can use what ever colors you like. The numpy methods real and imag will let you extract the real and imaginary part of a zero or pole.

What is coupling? What is rise time? What is rise time for a signal? How does rise time relate to coupling?

A boost converter is required to have an output voltage of 8 V andsupply a load current of 1 A. The input voltage varies from 2.7 to4.2 V. A control circuit adjusts the duty cycle to keep the outputvoltage constant. If the switching frequency is 200 kHz, determine:i. a value for the inductor such that the variation in inductorcurrent is no more than 40% of the average inductor current forall operating conditions.ii. a value for the capacitor such that the output voltage ripple isno more than 2%.iii. in case the OFF period is reduced by 30% for constantfrequency operation, find the new output voltage

Design an ACTIVE band-pass filter for the midrange part of a loudspeaker so that the bandpass region is 400 Hz-2000 Hz (as defined by the -3dB points). Design the circuit so that the absolute gain is 2. a. Draw the circuit diagram and specify the resistor and capacitor values. Assume you can use either 100, 330, 500, or 1000 Ohm resistors and can select any value of capacitor. b. Sketch the frequency response (Gain [dB] vs. frequency (Hz)). Note that you will need to convert your gain to dB before plotting. Magnitude (dB) 15 10 5 midrange 12 1 -5 -10 -15 -20 -25 10 100 1,000 Frequency (Hz) 10,000 100,000

Please give me typed answer.

2. Sampling frequency is one of the important elements in signal processing. Describe the meaning of a sampling frequency using a sketch if possible. Why is it important to set the sampling rate higher than the maximum frequency measured?

(a) Draw the equivalent circuit used for ac analysis of the circuit shown . (Use transistor symbols for this part.) Assume all capacitors have infinitevalue. (b) Redraw the ac equivalent circuit, replacing the transistor with its small-signal model. (c) Identify the function of each capacitor in thecircuit (bypass or coupling).

7-22 Abasehand signal with frequency components from near de to 15 kHz frequency modulates a 200-kHz carrier, and the frequency deviation is +3 kHz. The signal is applied as the input to a cascade of two frequency triplers and one frequency doubler. Determine the output (a) center fre- quency, (b) frequency deviation, and (c) deviation ratio.

FINDING THE TRANSFER FUNCTIONS

hand written answer,please

Output voltage, V, of a microphone is a Gaussian random variable with a mean of OV and variance of 2.8V2. Microphone output is processed by a limiting rectifier with cutoff at OV and +4.2V. (Output below OV is clipped to OV, and output above 4.2 V is clipped to 4.2V.) Random variable L is the output of the limiter: a. What is the CDF of L? b. What is the PDF of L? c. What is the E[L]? 0 L = g(V) = {V 4.2 V 4.2

Why is the R-2R ladder DAC design better than a binary-weighted DAC design, particularly if you extend to 16 bits?

Which of the following statement(s) is true for a gain response technique A. The breakaway point starts at a finite pole B. The break away point is always on the real axis C. The break away and break in points can be on the real axis D. The break in point is always at a finite zero E. The break in point can be complex