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A receiver produces a noise power of 200 mW with no signal. The output level increases to 5 W when a signal is applied. Calculate the signal-to-noise ratio as a power ratio and in decibels.
Calculate the BER if there were six bad bits in a total transmission of 10,000 bits.
Consider the signal x(t)=e^-at where a is a positive number. Determine the Fourier Transform of and plot both the magnitude and the phase angle as a function of the frequency.
The voltage drops across three resistors in series are measured to be 10.0V, 15.0V, and 25.0V. If the largest resistor is 47.0ohm, what is the value of the smallest resistor
A silicon sample is 2.5 mm in length, 1.2 mm in width and 0.7 mm high. It has been doped with Boron with a doping density of 8.5 x 1016 cm-3. Assume the temperature is 300°K.
using 1/(s+2)(s+4) + c find when the poles are repeated and use that value to calculate the impulse response using laplace transforms. Calculate the step response when c = 10 using Laplace transforms.
A balanced three-phase inductive load is supplied in steady state by a balanced three-phase voltage source with a phase voltage of 120 V rms. The load draws a total of 10 kW at a power factor of 0.85. Calculate the rms value of the phase currents
A long wire carrying a 5.0 A current perpendicular to the xy-plane intersects the x-axis at x = -2.0 cm. A second, parallel wire carrying a 3.0 A current intersects the x-axis at x = +2.0 cm.
Important information about RC Series Circuit, An RC series circuit has a voltage source of 10Vac, a resistor of 10ohms, and a capacitor with an impedance of -j10ohms
Find the nonzero value of ω for which the expression for Z(ω) given is purely real. Give your answer as a function of R, L, and C.
An LVDT is used in an accelerometer to measure seismic-mass displacement. The LVDT and signal-conditioning output is 0.31mV/mm with +/-2cm maximum core displacement.
Power Dissipation Problems, A signal generator outputs a sine wave signal with a frequency of 1000 Hz and an rms voltage of 20.0 V. The output of the spectrum analyzer is connected to a 200 ohm resistor.
The number of cell phones recycled or refurbished instead of being sent to landfills is increasing by about 30% per year since 2004. In 2008, 5.5 million cell phones were recycled or refurbished. (a) Find an exponential model for the situation desc..
A modulator transmits symbols, each of which has 64 different possible states, 15,000 times per second. Calculate the baud rate and the bit rate.
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