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A speech signal with a bandwidth of 4 kHz is sampled, quantized, and transmitted using a PCM system. It is desired that the data sample at the receiving end must be known within ±5% of the peak-to-peak full-sacle value of the amplitude ±A. Determine the number of samples must each digital word contain. Estimate the bandwidth of the PCM signal assuming the pulse is
by assuming k = 1 and 2 in (10.17.11b).
A 200 g block on a 50 cm long string swings in a circle on a horizontal, frictionless table at 75 rpm. What is the speed of the block What is the tension in the string
Use gate equivalences to convert the circuit attached into a five level circuit containing only NOR gates and a minimum number of inverters. (Assume the inputs are available only in uncomplemented form.)
A radio receiver for the HF band covers the frequency range 2 MHz to 30 MHz. The first IF frequency is 3.0 MHz and the local oscillator is above the received signal frequency.
A balacnced, three-phase, delta-connected load is supplied by a balanced, three-phase, wye-connected source over a balanced three-phase line. the source voltages are in abc phase sequence in which Van is 19.94
In a two-winding transformer N1 = 2000 and N2 = 500 and the supply voltage V1 = 1200 V. The transformer has winding resistances R1 = 2.0ohm and R2 = 0.125ohm , and leakage reactances X1 = 8.0 and X2 = 0.5ohm
Water is flowing at 3 m/s in a horizontal pipe under a pressure of 200 kPa. The pipe narrows to half its original diameter. (a) What is the speed of flow in the narrow section?
the te01 mode of a circular metallic waveguide is distinguished by its very low attenuation constant by comparison
Also, fully define the mixer by giving two permissible frequencies for the local oscillator, and define the required band pass filter (center frequency and bandwidth).
A balanced three-phase load is connected to a balanced three-phase supply via a transmission line. What must be the readings on the two wattmeters, the ammeter, and the voltmeter
Find the circuit differential equation in iL(t) and the initial conditions iL(0) and vC(0).- Use Laplace transforms to solve for iL(t) for t ≥ 0.
Assume the output of a zener regulator circuit drops from 8.0 V with no load to 7.8 V with a 500Ω load. What is the percent load regulation
Why is pulse shaping filtering indispensable in wireless communications applications. Give three reasons why pulse shaping filters are used and in what points of the communications link they may be deployed.
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