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It is difficult to compute the Laplacetransform X(s) of signal x(t)=1/t* u(t) by direct integration.Instead, properties provide a simpler method.a) Use Laplace transform properties to expressthe Laplace transform of tx(t) in terms of an unknown quantityX(s)b) Use the definition to determine the Laplacetransform of y(t)= tx(t)c) Solve for X(s) by using the two poeces from(a) and (b).
A M-bit thermometer code for the number k consists of k 1's in the least significant bit positions and M-k 0's in the more significant bit positions. A binary-to-thermometer code converter has N inputs and 2^N-1 outputs.
An ADSL signal uses 250 channels, each of 4 kHz bandwidth. Assume the maximum signaling rate to be 1 symbol/Hz. QAM is used within each channel with up to 64 point constellations. What is the bit rate/channel
An ideal p-n junction diode is reverse biased with a voltage of 30 mV. If the reverse current at this voltage is 1 pA and the area of the diode is 100 µm x 100 µm, what is the reverse saturation current density, JS
The standing-wave ratio on a lossless 300transmission line terminated in anunknown load impedance is 2.5, and the nearest voltage minimum isat a distance 0.2λ from the load. Determine: a. the reflection coefficient of the load,
A switch turns the voltage source on and off. Evaluate the voltages across each of the capacitors and determine whether the energy changes due to the switch being turned on or off.
Suppose we used the thumb rule that the optical line of sight distance from an antenna h meters high to the horizon,in kilometers is 4√h. what is the radius of the earth in kilometeres that would justify this approximation
A sequential circuit has two inputs w 1 and w 2 , and an output, z. Derive a suitable circuit for the given condition.
Determine the output y(t) if the input to the system is given by x(t) = u(t) - u(t-2) using complex-domain (not time-domain) analysis techniques.
A parallel circuit consists of a source and three resistors in parallel (R1=100-ohm; R2=200-ohm, and R3=300). The resistor of 100? draws a current of 500mA. a) Find the voltage across R1 b) Derive the current through R2 and R3
s(s^2-10+k(15s^2+2s+1)=0 Is the characteristic equation for a system in which K is a variable proportionnality factor. The system is known to be stable whrn K takes on certan values. for what range of K is the system stable
Radio Systems, In design of radio systems that incorporate wireless networks, considerations must be taken such as user access, transmission direction, switching and signal strength.
A Rankine-cycle steam power plant has a 5-MPa/450C throttle and 10-kPa condenser pressure. What are the net work, steam generator heat addition, thermal efficiency, heat rate, and turbine exit quality
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