Given a signal 
impulse sample it at the rate specified by multiplying it by a periodic impulse of the form 
Then filter the impulse-sampled signal with an ideal lowpass filter whose gain is 
in its passband and whose corner frequency is the Nyquist frequency. Graph the signal x (t) and the response of the lowpass filter xi (t) over two fundamental periods of xi(t).
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In a typical concrete mix, 10 to 15 percent of the volume is _____.
a. water b. aggregate c. admixtures d. portland cement
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Some scan tools have the ability to store or "____________________" data during a road test.
Fill in the blank(s) with the appropriate word(s).
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Technician A says that a leaking pressure relief valve can cause absence of power assist. Technician B says that a missing or slipping pump drive belt can cause lack of power assist. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
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What do the concentric magnetic flux lines around the conductor carrying an electric current represent?
A. Gravitational force B. Electromagnetism C. Magnetic compass D. Magnetic field
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