Compute and plot the 128 point fft of a 0.125hz cosine wave

Assignment Help Electrical Engineering
Reference no: EM13257613

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.

Reference no: EM13257613

Questions Cloud

Calculate the value of fridge- airs preferred stock : The Fridge- Air Company's preferred stock pays a dividend of $ 4.50 per share annually. If the required rate of return on comparable quality preferred stocks is 14 percent, calculate the value of Fridge- Air's preferred stock.
Explain what is the bond hybridization of if6 and if4 : Assuming that the following structures exist, what is the bond hybridization of IF6- and IF4-? Would they be stable?
Determining the firm net income : If a firm has a breakeven point of 20,000 units and the contribution margin on the firm's single product is $3.00 per unit and fixed costs are $60,000, What will the firm's net income be at sales of 30000 units?
What effect would rising rates have upon the following : If the Fed decides to raise interest rates next year, what effect would rising rates have upon the following: (1) Consumer financing for big-ticket items such as autos and homes; (2) the present and future values of annuities; (3) the NPV calculat..
Compute and plot the 128 point fft of a 0.125hz cosine wave : 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.Compute and plot the 128 point FFT of a 0.125Hz cosine wave
Find the cutoff wavelength : When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted, find the cutoff wavelength
Explain structure of a compound that has a formula of c6h12o : Give the structure of a compound that has a formula of C6H12O and has a triplet (3H 1.1ppm), doublet (6H, 1.2 ppm), quartet (2H 2.4 ppm) and septet (1 H,2.7ppm ) in the 1H NMR spectrum? Please explain how you figured it out.
What is the range of phase shifts induced by the modulator : Make sure to mark significant points in your figure (amplitude, offset, time, etc.). How could a device be modified to work as an electro-optic phase modulator? If we apply signal V, what is the range of phase shifts induced by this modulator.
Describe an experiment that galvani could have performed : When we discussed the work of Galvani and Volta, we noted that Galvani's work was not fully appreciated until the development of instruments capable of detecting and amplifying the small biopotentials present in living organisms.

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Determine the value of current through the capacitor

determine the current through the capacitor, i_c(t) for time t greater than or equal to zero if the following  statements apply. 1. Vc(t=0) = 5V 2. The switch is closed from t = - infinity to t = 0.2 seconds, when it opens.

  Define filter has steadily increasing attenuation

A filter has the following characteristics: Attenuation is 0 dB from 0 Hz to 2.5 kHz. Phase angle decreases linearly with increasing frequency above 2.5 kHz. Above 5 kHz the filter has steadily increasing attenuation.

  Find the value of fs so that the reconstructed signal

consider the back to back cascade of an ideal C to D and D to C converter. Both have the same sampling rate fs. Suppose that the signal being sampled is: x(t) = cos(324*pi*t - pi/4) + cos(80*pi*t - pi/4)

  Find what is the peak active power delivered to the load

A sinusoidal voltage of peak value 169.9 is applied to a load Z=16-j9. a)What is the peak active power delivered to the load b) What is the value of the average active power delivered to the load

  Describe the basic operation of the n-channel mosfet

Describe the basic operation of the n-channel MOSFET, the relationship to VGS, VDS an IDS. This would include such things as accumulation, inversion, pinch-off point, etc. Which end is the drain

  Find the value of the lumped elements c and l

A.) We would like to use a series lumped element b to match this load. What is the length of the line where the normalized input impedance is z= 1-jb(d/\lambda). If the rfequency is 1GHz , find the value of the lumped element(C or L).

  Determine the efficiency of the three-phase transformer

A 150kVA, 2080/208V, 60Hz, Y/Y connected, three-phase, step-down transformer consists of three identical single-phase transformers. Each transformer has the following parameter values: Rl = 0.45-ohm, Xl = 2.2-ohm , R2 = 4.5m-ohm

  Find the magnetic field produced by the two filaments

Two strands of infinitely long current rights carry currents of equal magnitude. Find the magnetic field produced by the two filaments at the midpoint between the two strands. Compare this result if the currents: a) have the same direction

  Design a series resonant circuit to have a bandwidth

Design a series resonant circuit to have a bandwidth of 400 Hz using a coil with a Ql of 20 and a resistance of 2 ohm. Find the values of L and C and the cutoff frequencies.

  Find the equivalent circuit of the transformer referred

The excitation branch impedances are given referred to the high-voltage side of the transformer. a) Find the equivalent circuit of this transformer referred to the high-voltage side.

  Find an xc value to put in parallel with the motor

A P=900W electric motor with pf=0.82 lagging is connected to a 240 Vrms 60 hertz source. a) Draw an equivalent circuit showing impedance and phasor values for Vs, R and X. b) Find an Xc value to put in parallel with the motor which corrects the pf to..

  Suggest ways to make the code more efficient

The program is to input the number character-by-character and then assemble them together so that the original number is put into a floating point variable and displayed back to the monitor.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd