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Given x(t)=2cos(10pi(t) + pi/6)) a.) Write signals as the real part of the sum if rotating phasors. b) sum of the counter-rotating phasors c.) Plot the single sided amplitude and phase spectra for this signal d.) plot the double-sided amplitude and phase spectra for this signal.
An SSB generator has a 9 MHz carrier and is used to pass voice frequencies in the 300- to 3300-Hz range. The lower sideband is selected. What is the approximate center frequency of the filter needed to pass the lower sideband.
Explain Capacitance of parallel plates capacitor, Relative permitivity is 500, The area is one square meter, The distance between the plates is 0.001 meters
A consumer protection agency conducts opinion polls to determine the quality (excellent, good, fair, bad) of products imported. if the agency conducted a poll in wich 1000 randomly selected individuals were contacted..
An FM transmitter delivers to a 75 ohm antenna a signal voltage of V (t)= 1000 sin (10^9t+4 sin 10^4t), determine: (a) carrier frequency; (b) intelligence frequency; (c)modulation index; and (d)total power in FM signal
3-phase-Y-connected load of 40,000W at 0.8 PF lag is supplied by a three-phase Y-connected source of 500V. Find the current and phase voltages. Assuming Van as ref. Determine Ian, Ibn, Icn, Vab, Vbc, and Vca in phasor form.
what is the conversion efficiency of an amplifier in which the effective value of the current through a 2.2k ohms load is 5 mA and the drain on the 18-V dc supply is 3.8mA. What will happen to the output AC signal if the DC level is insufficient
An electric dipole has opposite charges of 5.0x10^-15 C separated by a distance of .40mm. It is oriented at 60 degrees with respect to a uniform electric field of magnitude 2.0x10^3 N/C. Determine the magnitude of the torque exerted on the dipole ..
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.
Alice passes through four traffic lights on her way to work, and each light is equally likely to be green or red, independent of the others. Let X be the number of red lights that Alice encounters. Let A be the event that the first light is red.
What property of the space charge region contributes to the collection of charge carriers and which is not present in the neutral regions where movement and collection are by diffusion. Which resistance term does this affect, series resistance, RS,..
A short distance system is composed of two identical transmission lines with an amplifier between them. A 1 mW signal is transmitted at one end and is received at the other end with an SNR of 22 dB.
Consider the half-wave rectifier below. Assume the transformer output has amplitude 10.0 V and the diode forward voltage drop is zero. (a) What is the average output voltage (b) What's the RMS output voltage
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