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Problem: Consider the waveform x(t) shown below.
The above signal x(t) consists of a DC component plus a sinusoidal signal. (The terminology DC component means a component that is constant versus time.)
a. What is the frequency of the sinusoidal component?
b. Write an equation for the signal x(t) in the form x(t) in the form x(t) = B + Acos(ωot + ø) where -π , ø < π.
You can determine numerical values for all the amplitude, frequencies, and phases in your equation by inspection of the above graph.
c. Plot the two sided spectrum of the signal x(t). Show the complex amplitude for both the positive and negative frequency components contained in x(t).
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The O.C and S.C test data are given below for a single phase, 5 kVA, 200V/400V, 50Hz transformer. O.C test from LV side:200V 1.25A 150WS.C test from HV side:20VV 12.5A 175W
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A DC voltage of 10 V is applied across a parallel platecapacitor with a 2 cm separation between the plates. Knowing that the potential field distribution inside the capacitor is linear, plot the potential and electric fields inside the capacitor.
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A pump supplies oil at 0.0016 m3/s to a 40 mm diameter double-acting hydraulic cylinder. If the load is 5000 N (extending and retracting) and the rod diameter is 20 mm, find the Hydraulic pressure during the extending stroke.
The voltage across a 10-µF capacitor is given by v(t)=100sin(1000t). Find expression for the current, power, and stored energy. Sketch the waveforms to scale versus time.
1. What should the length of an antenna be if it is going tobe used to send data at 145.01MHz, assume a 1/4λmonopole antenna is used. 2. The impedance of an antenna was measured as z = 17 -j470Ω what does this mean
A temperature sensor has a static transfer function of 0.15 mV/C° and a time constant of 3.3 s. If a step change of 22° to 50° C is applied at t=0, find the output voltage at 0.5 s from t=0s to t=10s
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