Each signal in Figure E-49 is graphed over a range of exactly one fundamental period. Which of the signals have harmonic functions 
that have a purely real value for every value of k? Which have a purely imaginary value for every value of k?
(a) Even function, therefore CTFS harmonic function is purely real
(b) Odd function, therefore CTFS harmonic function is purely imaginary.
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Which president is credited with establishing the U.S. Forest Service?
What will be an ideal response?
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The ____________________ capacitor has two metal plates with an air dielectric.
Fill in the blank(s) with the appropriate word(s).
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When AC voltage is rectified and converted into DC, the resulting waveform is normally not pure, flat DC. The pulses that occur are called _____.
A. harmonics B. cosines C. ripples D. peaks
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4 x 6 = ____________________.
Fill in the blank(s) with the appropriate word(s).
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