Final answer:
The time for one complete cycle of 400-Hz power used in military aircraft is 0.0025 seconds or 2.5 milliseconds.
Step-by-step explanation:
Military aircraft generators commonly operate at 400-Hz to reduce weight and size of the equipment. To find the time for one complete cycle (also known as the period) of this power, we use the formula T = 1/f, where T is the period in seconds, and f is the frequency in hertz (Hz).
Given that the frequency f is 400 Hz, the time for one complete cycle is T = 1/400 Hz, which calculates to 0.0025 seconds or 2.5 milliseconds per cycle.
The question is about the frequency of an aircraft generator used in military aircraft.
The subject of this question is Physics. The question is asking about the frequency of an aircraft generator, specifically in military aircraft that use 400 Hz AC power. This frequency is chosen because it allows for the design of lighter-weight equipment.