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4.3 Варианты заданий для расчетов.
Задача 4.1 Определить напряженность электрического поля волны при
распространении над сушей (εˊ= 4; σ = 0.001 См/м), если известны:
расстояние, частота, мощность излучения, КНД = 1.5.
Таблица 4.1
Вариант 1 2 3 4 5 6
110 180 18 100 180 60
500 700 1100 1500 2000 3000
90 250 4 125 90 130
Задача 4.2 Определить напряженность электрического поля волны при
распространении над морем (εˊ= 80; σ = 4 См/м), если известны: расстояние,
частота, мощность излучения, .
Таблица 4.2
Вариант 1 2 3 4 5 6
1400 900 600 800 450 400
500 700 1000 1500 2000 3000
80 120 80 240 125 220
Задача 4.3 Определить напряженность электрического поля в ночные
часы, если известны: расстояние, частота, мощность излучения, .
Таблица 4.3
Вариант 1 2 3 4 5 6
1200 1400 1300 1200 1100 1000
500 600 700 850 900 1000
180 180 240 200 130 180
Задача 4.4 Определить продольную составляющую поля на границе раздела,
если известны: частота, параметры почвы, нормальная составляющая
напряженности поля.
Таблица 4.4
Вариант 1 2 3 4 5 6
100 200 500 600 750 1000
εˊ 80 10 4 80 10 4
σ, См/м 4 0.01 0.001 4 0.01 0.001
20 5 10 10 5 20

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4.3 варианты заданий для расчетов

  • 1. 4.3 Варианты заданий для расчетов. Задача 4.1 Определить напряженность электрического поля волны при распространении над сушей (εˊ= 4; σ = 0.001 См/м), если известны: расстояние, частота, мощность излучения, КНД = 1.5. Таблица 4.1 Вариант 1 2 3 4 5 6 110 180 18 100 180 60 500 700 1100 1500 2000 3000 90 250 4 125 90 130 Задача 4.2 Определить напряженность электрического поля волны при распространении над морем (εˊ= 80; σ = 4 См/м), если известны: расстояние, частота, мощность излучения, . Таблица 4.2 Вариант 1 2 3 4 5 6 1400 900 600 800 450 400 500 700 1000 1500 2000 3000 80 120 80 240 125 220 Задача 4.3 Определить напряженность электрического поля в ночные часы, если известны: расстояние, частота, мощность излучения, . Таблица 4.3 Вариант 1 2 3 4 5 6 1200 1400 1300 1200 1100 1000 500 600 700 850 900 1000 180 180 240 200 130 180 Задача 4.4 Определить продольную составляющую поля на границе раздела, если известны: частота, параметры почвы, нормальная составляющая напряженности поля. Таблица 4.4 Вариант 1 2 3 4 5 6 100 200 500 600 750 1000 εˊ 80 10 4 80 10 4
  • 2. σ, См/м 4 0.01 0.001 4 0.01 0.001 20 5 10 10 5 20