In some types of communication systems binary data are transmitted using a technique called binary phase-shift keying (BPSK) in which a “1” is represented by a “burst” of a continuous-time sine wave and a “0” is represented by a burst which is the exact negative of the burst that represents a “1.” Let the sine frequency be 1 MHz and let the burst width be 10 periods of the sine wave. Find and graph the CTFS harmonic function for a periodic binary signal consisting of alternating “1’s” and “0’s” using its fundamental period as the representation time.
What will be an ideal response?
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Annual inspection documentation needs to be retained by the employer conducting the inspections for a minimum of _____.
a. three months b. six months c. one year d. three years
Explain what a ridge board is.
What will be an ideal response?
This circuit significantly attenuates all frequencies below the critical frequency and all frequencies above the critical frequency are passed
A) band-pass filter B) high-pass filter C) active filter D) low-pass filter
Technician A says that the decision about when to replace a part can be based on the manufacturer’s recommendation. Technician B says that the cost of repair is often used to judge if a part should be replaced instead of being repaired. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B