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For cascaded amplifiers in general, at the half-power frequency of one stage, what will the loss in decibels be in comparison to midband for a two-stage amplifier? For a three-stage? For an n-stage?
Sketch the DFT(discrete fourier transform)for a square wave with frequency 1Hz and 10 Hz given N=64 and SR(sample rate)=128. Make sure to label your axes.
A shunt-connected a DC motor has zero rotational losses and RA = 0. Assume that RA and Radj is constant [except in part (d)] and that φ is directly proportion to field current. For VT= 200 V and Pout = 2 hp.
As speed increases, the lower lamp, L1 lights, then L1 and L2, then, L1, L2, and L3, until all lamps light at the highest speed. Once all the lamps illuminate, no further increase in speed will have any effect on the display.
In a line of sight link , the transmitted power = 1 watt at the frequency of 11 GHz and the transmitting antenna has gain of 1000 , the receiving antenna is 40 Km apart from the transmitting station
Find the current in a ground loop that is 200 ft long, has a wire resistance of 0.05 ohms/ft, and has a difference of 4 V between grounds.
Describe in details the Thévenin's and Norton's theorems. Compare and contrast the above theorems.
Write the VHDL text file for a circuit to implement the arithmetic circuit that subtracts two 12-bit numbers (B from A) and adds a third 12-bit number (C) from the result. Use INTEGER types
Calculate and plot the resulting noise figure as the input reflection coefficient magnitude, ||, varies from 0 to 0.9 for F = 1, 3, and 10 dB.
In a silicon bar uniformly dopes with 10^16 phosphorus atoms per cubic cm and 5*10^14 boron atoms per cubic cm. Calculate the mobile electron and hole concentrations for this bar.
In comparing the behaviour of an n-channel MOSFET with a p-channel device having identical geometry and threshold voltage, it is found that the n-channel FET has a greater drain current than that of the p-channel FET.
Eigenfunctions and LTI systems, The eigenfunction property is only valid for LTI systems. Consider the cases of nonlinear and of time varying systems.
A transducer produces a sinusoidal waveform with an amplitude of 2.5 VPK and a DC offset of 0 VDC. The ADC input signal range is 0 V to 5 V. Describe the signal conditioning circuit that is needed to use the full-scale range of the ADC.
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