Pulse duration is ______ to the number of cycles in the pulse.

Pulse duration is ______ to the number of cycles in the pulse.

• A. Directly proportional
• B. Inversely proportional
• C. Not related
• D. Exponential proportional

Answer: (A)

Pulse duration scales linearly with the number of cycles in the pulse, assuming the cycle frequency is fixed. Each cycle takes a fixed amount of time (the period), so adding more cycles adds that same amount of time to the pulse. Double the cycles, the pulse lasts twice as long; halve the cycles, the pulse shortens by half. This is a direct proportionality: duration ∝ number of cycles. If the frequency changed while keeping the number of cycles the same, the duration would also change, but with a fixed frequency, the relationship with cycle count remains linear.

Pulse duration scales linearly with the number of cycles in the pulse, assuming the cycle frequency is fixed. Each cycle takes a fixed amount of time (the period), so adding more cycles adds that same amount of time to the pulse. Double the cycles, the pulse lasts twice as long; halve the cycles, the pulse shortens by half. This is a direct proportionality: duration ∝ number of cycles. If the frequency changed while keeping the number of cycles the same, the duration would also change, but with a fixed frequency, the relationship with cycle count remains linear.