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The exponential Fourier spectra of a certain periodic signal x(t) are shown in Fig. 6.13. Determine and sketch the trigonometric Fourier spectra of x(t) by inspection of Fig. 6.13. Now write the (compact) trigonometric Fourier series for x(t).
n other case Trackers have the ability to increase power generated by direct radiation by 40 %. However, the cost of installed system (including trackers) will be $2.60 million. Calculate the cost of generated electricity in the second case.
(a) At t = 0, the current flowing in a 0.5-H inductance is 4 A. What constant voltage must be applied to reduce the current to 0 at t = 0.2 s (b) Starting at t = 0, a constant 12-V voltage source is applied to a 2-H inductor.
A DC motor has an input of 0-5V and runs at speeds from o to 80 rpm. What duty cycle signal is required to run the motor at approximately 20 rpm
Two single phase transformers are connected in parallel with the following parameters. Transformer A, rated at 60 kVA Rc=250 k Ohm Req=25 Ohm Xm=45 k Ohm Xeq=150 Ohm
Two free particles (that is, free to move) with charges +1µC and +3µC are a distance L = 2m apart. A third charge is placed so that the entire system is in equilibrium. Find the location, magnitude, and sign of the third charge.
The underground cable is now supplying 8 kV to an 800 kVA, 0.9 PF lagging single-phase load. What is the sending end voltage and current of this transmission line?
An AC signal has a peak value of 100 V and a frequency of 60 Hz. If the voltage crosses zero in a rising direction at t=0 seconds, what is the instantaneous voltage at t = 0.004167
If Alice and Bob are continuously sending messages to each other, can they create a security association once and use it for every packet exchanged? Explain.
If a kernel of an algorithm is accelerated by a factor of 100, and the kernel accounts for 90% of execution time before acceleration, what is the overall speedup?
How to Program PIC18 Microcontroller in C. ?? (with expalanation and examples )
Find the initial torque supplied to the antenna.
For use in a liquid crystal display, you want an electrode that is transparent to all visible light. You decide to use a doped semiconducting oxide with a mobility of 10^(-2) m^2/V-s. What is the maximum conductivity you can expect from your oxid..
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