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What is a CRC sequence used for? Give at least two different ways the PSTN may setup a voice circuit ? List at list five drawbacks or challenges designers faced in making VoIP a reality ? List at least four tasks the gateway may do ? List at least four transmission media and formats that a media gateway should be able to support.
If the maximum demand on the station is 2500 kW and the number of kWh generated per year is 45 x 105, determine the diversity factor and annual load factor.
What are the two possible LO frequencies and the corresponding image frequencies?
A conducting sphere in free space has a radius of a= 10cm. the capacitance of the isolated sphere is C= 4oa. now let's coat the sphere with a dielectric with fr= 3, and the thickness of the dielectric layer is d.
Assume that the load is star connected with the neutral disconnected. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Plot the neutral voltage Plot the phase to neutral voltage for phase a.
In this problem, it may help to first establish which resistors are truly in parallel.- Use the current divider rule to find I1.
Using the program, show that VSB can be demodulated using carrier reinsertion.
Find the mathematical expression for the current through the coil once the switch is closed. - Find the mathematical expression for the voltage across the coil during the same transient period.
If a particular radar reciever can detect the target using HH polarization at a maximum distance of 10km, find the maximum distance at which the target can be detected using VV polarization. Assume a standard radar equation.
Design a DC power supply that provides -95v +/- 5v to a 2 amp load (energy absorber). The input source is a 100 volt peak sinusoid, 60 Hz. You may use any circuit element we've studied. State the values of all circuit elements
What is the phase difference in a circuit with 100V,drawing 0.5 amps, consuming 50 Watts
1. (35) Two unlabeled boxes contain KCl and CsCl for analysis using XRD. The diffraction maxima are observed from the (111) planes, using X-rays of wavelength 0.0862 nm. a. What is the diffracted beam angle, q (with respect to the plane) for b..
Suppose that the machining operation requires 1 kW, that the tool machine ihas 90 percent efficiency, and that the supply current is 14 A rms with a power factor of 0.8. Find the AC machine efficiency.
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