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Signals and Systems:
Problems:
1. (a) Write the equations for the signals below in terms of unit step functions.
(b) Calculate the convolution y(t) = x(t)*h(t) for those two signals.
2. Calculate the convolution y(t) = xi(t)*h(t) for the impulse response h(t) and each of the signals xi(t) below.
suppose station a and b are interconnected through two parallel unreliable links where each link has a failure
A balanceed three-phase load of 15 MA with a lagging load factor of 0.85 is supplied by a 115KV subtransmission line. if the line impedance is 50+j100Ohm per phase, determine the following: (a) The line current of the load
Given a 4.0-nC charge on a 1.0 meter length of an inner cylindricalshell of radius a = 0.060 m, a -4.0-nC charge on a 1.0 meter lengthof an outer cylindrical shell of radius b = 0.077 m, & anεr = 9.0 dielectric in between the shells,
If the semiconductor depicted in the graph below is germanium at room temperature, what is the value of n (the density of electrons in the conduction band) at x=L
use a third-order low pass filter with a -3dB frequency of 10 Hz to filter your signal. What sampling rate should you use to make sure any potentially aliasing frequencies are attenuated by at least -40 dB for a. A butterworth filter
find the spectrum of the signal s(t) that results from the use of natural sampling,assuming that time t=0 corresponds to the midpoint of a rectangular pulse in c(t). show that the original signal m(t) may be recovered exactly from its naturally sa..
above the azimuth at 900 mHz. Suppose 1 W is supplied to the dipole antenna, neglecting losses
What will be the total impedance of a series circuit having a resistor of 100 ohms, an inductor of 200 ohms reactance, and a capacitor of 300 ohms reactance. Also, what will be the dissipated power when voltage source is 10sin1000t.
1. An amplifier has cutoff frequencies of 120.0 Hz and 1.200 kHz. Calculate the bandwidth and center frequency of the amplifier. 2. The upper cutoff frequency of an amplifier is 8.000 MHz and its center frequency is 1 MHz.
Given N-type silicon sample with uniform donor doping of (a) Nd= 1018/cm3 , (b) Nd= 1019/ cm3 and (c) Nd= 106/cm3, calculate the Fermi levels at room temperature assuming full ionization for all cases.
When fed from a signal source with a peak amplitude of 0.1v and a source resistance of 20k , the peak amplitude v(pi)is 5mv. specify Re and bias current Ic. The BJT has beta =100. If the total resistance in the collector is 5 k,
A cube with an edge of length 2 mm is charged to -1.2 C. Find: a)ρv , if the charge is distributed uniformly over its volume ; b) ρs , if the charge is distributed uniformly on its surface; c)ρL , if the charge is distributed uniformly on the edges o..
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