1. Suppose that MATLAB is used to plot a sinusoidal signal. The following MATLAB code generates the signal and makes the plot. Draw a sketch of the plot that will be done by MATLAB. Determine the amplitude (A), phase ($), and period of the sinusoid and label the period on your plot. dt = 0.001; tt = = .05 dt : .15; Fo = 8; Z sqrt (2) * (1-j); xx = real( Z*exp( 2j*pi*Fo*tt ) ); plot tt, XX ), grid title( 'SECTION of a SINUSOID' ), xlabel('TIME (sec)')

For the circuit shown below: A. Draw a phasor diagram(use graph paper / engineering paper) to determine RL, XL and XC.   B. What is the quality, QL, of the inductor?     C. Write an expression for C in terms of XC and source frequency in Hertz, f.     Please try in typing format please ASAP

9. Find the power and rms value of signal x(t)=20cos2nt.

C1 L1 R1 V1 Vout V1 contains the fundamental and its harmonics (fo, 2fo, 3fo, ...). The amplitude of the harmonics is inversely proportional to the harmonic number. V(fo) = 10 mV V(2fo) = 10mv/2 = 5 mV V(3fo) = 10mv/3 = 3.33 mV V(4fo) = 10mv/4 = 2.55 mV a) What is the minimum value of Q for the circuit that will attenuate the third harmonic (3fo) in Vout to be less than 1% of the fundamental? b) What is the amplitude of the fifth harmonic (5fo) as a percentage of the fundamental?

A frequency generator is set to output the equation below. The waveform is sampled at 900 Hz. Which frequency is aliased? (Enter the waveform frequency not the aliased frequency and round your answer to the nearest integer in Hz.) y = 4.8.sin(2 IT 453-t + 7) + 2.5-sin(2,728-t + 6)

A triangular wave is applied to the circuit shown below; determine the output waveform. Give justification.

Using a line phasor (circle), draw the two given phasors. Use the sine function as the base function.

1. A rectangular pulse with a pulse duration t, so in frequency domain its form will be ....

IN Consider the discrete-time sinusoid x[n] = cos 8 a. Plot x[n] for n = 0,..., 48. b. Is this discrete-time sinusoid periodic? If so, what is the period? c. Find and plot another discrete-time sinusoid y[n] = cos(w₁n) with a different frequency (w₁ ) that yields exactly the same values as x[n].

Any non-sinusoidal wave can be represented by a . . with harmonic frequencies. * ... of sine waves ..... ..... O non-of-them O add O difference sum