Questenaتدريب يوضح لك ما ينبغي مراجعته لاحقًا
السؤال 399

How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

  1. It increases by a factor of 3
  2. It decreases by 50 percent
  3. It increases by a factor of 2الإجابة الصحيحة
  4. There is no adjustment allowed for lower duty cycle

الشرح

The exposure limits are averaged over a fixed period, so a transmitter that is on only half the time delivers half the average exposure for the same output. That allows twice the power density during transmission, a factor of 2 increase in the allowable value.

تابع هذا الاختبار

بدء التدريب
السؤال 399: How does the allowable power density for RF safety change… · FCC Technician Class (Element 2) · Questena