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A crucial step in showing that the waves in a fluid are necessarily longitudinal was the integral in (16.142). For an arbitrary function f (ξ), with derivative f'(ξ), prove that f f ‘(n • r - ct)dt = - f (n • r - ct)/c.
The solution to Power Factor, Two single-phase loads are connected in parallel across a 415 V, 50 Hz supply. One load is rated 130 kW at a power factor of 0.75
A lottery winner got $350,000 that invested as follows: part of it in a money market account, part in municipal bonds, and part in a mutual fund. After one year, he recieved a total of $24,200 in simple intersest from the three investments.
The heating element in a soldering iron has a resistance of 30-ohm. Find the average power dissipated in the soldering iron if it is connected to a voltage source of 117 V rms.
a. Sketch the spectrum of the original signal and the sampled signal from 0 kHz and 25 kHz. b. Sketch the recovered analog signal spectrum if an ideal lowpass filter with a cutoff frequency of 4 kHz is used to filter the sampled signal. X(f) 10k 2..
Write a short report that analyses the P&ID - Basic Neutralizer Control System: The neutralizer process may be used to adjust the pH of a feed stream.
Suppose we want to construct an amplifier with a closed-loop gain of 50. We want the gain to vary by no more than +/- 5% while the open-loop gain varies by +/- 50%. Determine the values for a and b that will satisfy these constraints.
Write the magnitude function for a third order Chebyshev filter having a ripple coefficient of 0.4. Do not expand. Also find the cutoff frequency.
(b) Verify that there are 4.994×(10 to the power 22) atoms per cubic centimeter in the Si lattice at room temperature. (c) Determine the center to center distance between nearest neighbours in the Si lattice.
Calculate maximum conduction losses when operating at maximum current and a duty cycle of 5% and design a gate drive circuit.
Determine the Fourier Series representation of the signal x(t)=-1-2cos(27pi(t)-(pi/4))+cos(63pi(t)-(pi/2)).Sketch the two-sided spectrum of the same signal above.
If a single-loop circuit consists of an ideal 15-V dc source VS, a variable resistor R and the described Zener diode, find the range of values of R for which Zener diode remains in constant reverse breakdown with no danger of failure.
The Fourier sine series is especially convenient for discussing functions that are zero at the end points x = 0 and L.
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