What are 2 characteristics that create pulses of long duration?

What are 2 characteristics that create pulses of long duration?

• A. Many cycles in the pulse; Individual cycles with long periods
• B. Few cycles in the pulse; Individual cycles with short periods
• C. Many cycles in the pulse; Short periods
• D. Few cycles in the pulse; Long periods

Answer: (A)

Pulse duration depends on how many cycles are packed into the pulse and how long each cycle lasts. The total time of the pulse is essentially the number of cycles times the period of each cycle. So having many cycles and long periods means the pulse spans a longer amount of time. That’s why many cycles in the pulse together with long individual cycle periods create a long-duration pulse. If you have fewer cycles or shorter periods, the pulse duration is shorter.

Pulse duration depends on how many cycles are packed into the pulse and how long each cycle lasts. The total time of the pulse is essentially the number of cycles times the period of each cycle. So having many cycles and long periods means the pulse spans a longer amount of time. That’s why many cycles in the pulse together with long individual cycle periods create a long-duration pulse. If you have fewer cycles or shorter periods, the pulse duration is shorter.