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Given a LEO satellite system with a dish gain of 20 dB , orbiting altitude of 789 km, and download frequency of 1626 MHz , what is the satellite's transmitter output power required so that it is received by a wireless phone with 1 pW? (assume the phones antenna has unity gain).
G(s)= K(s-2)(s-4) / s(s+5) Sketch the root locus and find the following: a) Break away and break in points b) The jw-axis crossing points c) The range of gain to keep system stable
A shunt-connected a DC motor has zero rotational losses and R A = 0. Assume that R A and R adj is constant [except in part (d)] and that is directly proportion to feild current. For VT= 200 V and P out = 2 hp.
The ABCD constants of a three-phase, 345-kV transmission line are A = D = 0:98182 + j0:0012447. The line delivers 400 MVA at 0.8 lagging power factor at 345 kV. Determine the sending end quantities, voltage regulation, and transmission efficiency.
Design a 7.5V zener regulator circuit using a 7.5V zener specified at 12mA. The zener has an incremental resistance of r and a knee current of 0.5mA. The regulator operates from a 10V supply and has a 1.2k-ohm load.
If non-ideal interface trap density of Dit = 5x1010/cm2/eV is to be considered, what is the shift in the flat band voltage. Assuming all interface traps are acceptor-like (negatively charged if filled with an electron and neutral if empty)
Suppose we have a secret message that is 105 BINARY digits long. What is the smallest power of 2 needed to generate a binary codeword long enough for this message What is the maximum number of binary digits that can be generated with this choice o..
A 150 MVA, 24 kV, 123% three-phase synchronous generator carries the rated load at a power factor 0.83 (lagging). Calculate the necessary excitation voltage and input complex power.
A wave is specified by y = 8cos2π(2t-0.8z), where y is expressed in micrometers and the propagation constant is given in μm-1. Find (a) the amplitude, (b) the wavelength, (c) the angular frequency, and (d) the displacement at time t=0 and z=4 μm.
Suppose a signal is sampled at 1 kHz and you compute the DFT of the signal using 1000 signal samples. What frequency in Hz corresponds to the 150th value of the DFT
The 3phSM is used in a pumped storage application which has a head of 250 m. When pumping or generating, it operates at 84% efficiency, rated stator conditions. Determine the turbine flow when (1) generating and (2) pumping.
The command in AutoCAD can be a time-saver, particularly when you're working in an application where you want to move a door or windows within walls on a drawing and don't want to redraw the walls.
A signal x[n] is formed by sampling a signal x(t) = -4sin(200*pi*t) at a sampling rate of 400Hz. Graph x[n] over 10 fundamental periods versus discrete time. Then do the same for the sampling frequencies of 60 and 200Hz.
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