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a digital channel is described by 16 QAM, the data rate is 50 Mbps, the bandwidth is 200 MHz, the power is 1 W, and the received noise level is 50 mW. Resolve for SNR, Baud Rate and the Max theoretical bit rate for the channel.
Devise a detailed algorithm for a ring with p nodes so that each node would atttain the final sum of original node values. Determine the worst case communication steps for the algorithm.
Specifications of an analog filter are given below: Butterworth highpass filter Absolute passband gain=1 3-dB cutoff frequency at 4000 radians/second 40 dB attenuation at the stop frequency of 800 radians/second
A balanced star load of 8+j6 O per phase is connected to three-phase, 230 V supply. Find the line current, power factor, power, reactive VA and total VA.
A 220V dc series motor runs at 700 rev/min when operating at its full-load current of 20A. The motor resistance is 0.5W and the magnetic circuit may be assumed unsaturated. What will be the speed if: (i) the load torque is increased by 44
It is operating at 50% of its rated load at a power factor of .5 leading, compute efficiency using both exact and approximate equivalent circuits as referred to the primary side. Tabulate the percent errors in the currents, voltages, powers
A voltage source with voltage Vs = V0 sin(pi*t) is driving a load of RL = 100 Ohms. The load is connected to the source by a transmission line with characteristic impedance Z0 = 50 Ohms. The velocity of propagation on the line is 2 108 m/s.
Silicon has an absorption co-efficient of 850 cm-1 at a wavelength of 805 nm. Light of intensity 1 W/m2 at this wavelength is directed at normal incidence onto a polished silicon wafer of thickness 0.5 mm.a. Assuming a top surface reflectance of 30..
A Thevenin equivalent can also be determined from measurements made at the pair of terminals of interest. Assume the following measurements were made at the two external terminals a, b of a circuit.
In a satellite receiver operating at 12.0 GHz there is need for a reactive impedance having reactance of X = - 67 Ohm. Using an open circuit stub formed from 50 Ohm lossless transmission line having a phase velocity of 1 x 10^8 m/s
A baseband sine wave signal with frequency 4.0 kHz is modulated onto a carrier at 1.050 MHz using DSB-LC AM. What are the frequencies of the sidebands of the RF signal?
a)Write the diffrenece equation for a four-term moving average filter. b) The input x[n] = cos(n pi/6)u[n] is passed through the four-term moving average filter. Solve for the first 5 samples of the output.
A torque of 10 N.m is applied to a uniform disk shaped flywheel. The flywheel has a mass of 20kg and a radius of 0.5m. At t=0, the flywheel is at rest. How much energy is stored in the flywheel at the end of 20 sec
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