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A periodic signal consists of the exponentially decreasing wave form e^(-at), 0<t<T, repeated every T seconds. A given signal f(t) is multiplied by this periodic signal. Determine an expression describing the spectrum and the time waveform of the resulting amplitude-modulated signal if all componets except those centered at + Wc, Wc = 2π/T, are discarded?
find the number of years that the country can go without constructing a generating plant before the load exceeds the generating capacity. Assum a 5% annual growth rate in demand.
Solve y"+y'-2y=2x^2, y(0) = 0, y'(0) = 1 following these steps a) find homogeneous solution, b) find nonhomogeneous solution with method of undetermined coefficient with constants evaluated,
compute the power loss in a transmission line with a resistance of 0.05 ohms/mile. Compute the power loss if 500kW of power is transmitted from a power generating station to cities at distances of 20,30,40....100 miles at 100v and 200v.
Find the capacitive susceptance per km of a single-phase line operating at 60Hz, using both the capacitance formula and the Tables. The conductor is Partridge, and spacing is 20ft between centres.
A 15 hp, 209V,three-phase,six pole, Y-connected induction motor has the following parameter values per phase: R1= 0.128 ohm, R'2=0.0935 ohm Xeq- X1 + X'2 = 0.49 ohm. The motor slip at full load is 3%, and the efficiency id 90%.
Design a 4-bit synchronous up/down counter using T flip-flops. The circuit has one input up' /down such that input 0 means count up and input 1 means count down. up' is "up" with a bar over it
The length of GaAs laser resonator is L = 165 um; the width and the thickness are W = 10 um and d = 0.1 um. Find the photon round-trip time in this resonator. The refractive index of GaAs is 3.7.
a DC motor turns at a speed of 1460 rpm and produces an output torque of 3.0Nm. The DC voltage applied to the motor is 100V and a current of 5.1A flows through the motor. A. What is the efficiency of the motor
An iron core of cross-sectional area 200 square mm and length 320mm is evenly wound with a coil of 100 turns. When a current of 0.35A flows in the coil, a magnetic flux density of 0.12T is set up in the iron core.
A transducer with a Thevenin equivalent output resistance, RTH =10 k-ohm and a Thevenin equivalent open circuit voltage of V TH = 1 millivolt must be amplif ied to 5 volts. Using an ideal OpAmp, design a non-inverting amplifier circuit to do this ..
If you have a 30 VDC - 4A power supply and need to power two 24VDC - 0.8A MFC (mass flow controller), create a circuit that divide the voltage and can handle the power.
1. A MOD 8 down-counter is holding the count 101 (base-2). What will the cound be after seven clock pulses 2. A MOD 5 and a MOD 20 counter are cascaded. What is the output frequency if the input frequency is 60MHz
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