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A carrier signal c(t) = 10 cos(2pifct) is modulated using a message signal m(t) cos(20pit). The modulation is FM, with kf = 50.
Write equation for modulated signal
What is average transmitted power & modulation index?
What is bandwidth using either Carson's rule or "universal curve"?
What is the bandwidth required so that the modulated signal contains atheist 90% of the power of the unmodulated carrier?
Hint: Use Bessel functions to compute the sidelobe tone powers first.
Using the Quine-McCluskey's method, find the SOP and POS solutions for the function below, and verify that they match with the Karnaugh map solutions. f (a,b, c, d) = \(\sum m(0,1,6,15)+ \sum d(3,5,7,11,14)\)
A piston-cylinder device initially contains 1 m of nitrogen gas at 400kpa and 27 c. A resistance heater is turned on inside the cylinder which passes 70 kj of electricity to the nitrogen gas.
Two small plastic spheres are given positive electrical charges. When they are a distance of 15.6{\rm cm} apart, the repulsive force between them has a magnitude of 0.235{\rm N} .What is the charge on each sphere if the two charges are equal
1. Calculate the total (composite) load power factor, true power, reactive power and apparent power. 2. Also calculate the full-load current and the amount of capacitive KVAR needed to bring the overall power factor to .95 lagging.
Describe the relationship between peak voltage, peak-to-peak voltage and rms voltage. Include in the discussion which values can be demonstrated with the laboratory test equipment.
consider a scenario where there is a direct path from bs to ms,while other multipath components are reflected from a nearby mountain range.the distance between the bs and ms is 10km and the distance between the bs and mountain range as well as the..
A certain pn junction is operating with Vt=26mV and ni=1.08x10^10 electrons/cm^3. The doping concentrations are Na=2x10^15 cm^-3 and Nd=9x10^16cm^-3. The diffusion coefficient are Dn=34cm^2/s and Dp=12cm^2/s.
A telecommunication system has a link bandwidth of 10 MHZ, signal propagation of 3.5 x 10^8 m/s, transmitting as 1500 frames per minute, with 15000 bits per frame, over a distance of 100 km. What is the bandwidth-delay product?
A 3 phase 50hz star connected motor has rotor resistance and stand still reactance of 0.025ohm and 0.35 ohm respectively. The full load slip is 5% calculate the resistance per phase of a star connected rheostat
Design a 3:2 priority encoder. It will take inputs D3, D2, and D1, and produce A1 and A0. If exactly one of the inputs is true, the output is the binary number corresponding to the input number (D3 -> 11, D2 -> 10, D1 -> 01).
An ideal p-n junction diode has saturation current Is = 3e-15 A. Calculate the diode current.
Using 4 PSK or 2 PSK with the same total power as a reference, calculate the Eb/No versus Pe waterfall plot and compare the asymptotic coding gain of the coder/encoder.
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