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Задача 10. Определить токи во всех ветвях и напряжения Uab
Задача 05
Определить токи во всех ветвях и напряжения Uab
Задача 06
Определить токи во всех ветвях и напряжения в точках a, b, c, при условии, что вывод «–» источника ЭДС заземлён
Задача 07
Определить токи I1, I2, I3 в ветвях пользуясь законами Кирхгофа, если
U=20 B, E2=100 B, R1=R3=10 Om, R2=20 Om
i
Решение
i1+i2=i3
i1*R1-i2*R2=-E2
i1*R1+i3*R3=-U
10i1-20i2=-100
10i1+10(i1+i2)=-20
i1=-10+2i2
5i2=18
i2=3,6
Задача 08
Определить величину и направление напряжения U , при котором ток i2 будет равен нулю, если E2=100 B, R1=R3=10 Oм, R2=20 Oм. Чему, при этом, будут равны значения токов i1 и i3?
Задача 09
Как изменится значение токов i1, i2, i3 в этой схеме (задача 08, E2=100 B, R1=R3=10 Oм, i2=0, R2=20 Oм.), если R2 уменьшится в 10 раз?
Задача 10
Как изменится значение токов i1, i2, i3 в этой схеме (задача 08, E2=100 B, R1=R3=10 Oм, i2=0, R2=20 Oм.), если один вывод R2 оторвётся от схемы?
Задача 11а(вар. 1-36)
Для данной схемы определить потенциалы всех точек (a, b, c, d, e, f, g, h, i) при разомкнутом ключе. Напряжение Е и внутренние сопротивления r источников ЭДС , а также спротивления R в цепи взять из варианта задания. Обратить внимание на знаки ЭДС – при положительном знаке ЭДС они соответствуют приведенным на рисунке.
Задача 11б(вар. 1-36)
Для этой же схемы определить потенциалы всех точек (a, b, c, d, e, f, g, h, i) при замкнутом ключе. Напряжение Е и внутренние сопротивления r источников ЭДС , а также спротивления R в цепи взять из того же варианта задания.
Ответы в обоих задачах приводить в виде таблицы, приведенной ниже.
Преподавателю сообщить (по каждой задаче) только одно число – Сумму (алгебраическую) всех потенциалов с точностью до 1 десятичного знака после запятой.
Задача 11с(вар. 1-36)
Определить, при замкнутом ключе, потенциал какой точки (номер позиции) следует приравнять нулю, чтобы потенциалы всех остальных указанных точек были положительными.
Например:
Варианты задачи 11
Вар
| E1
| E2
| E3
| E4
| r01
| r02
| r03
| r04
| R1
| R2
| R3
| R4
|
| 25,0
| 5,0
| 20,0
| 35,0
| 2,0
| 6,0
| 2,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| 7,5
| 10,0
| 12,5
| 20,0
| 1,0
| 2,0
| 2,0
| 3,0
| 4,0
| 8,0
| 20,0
| 10,0
|
| 30,0
| 5,0
| 25,0
| 35,0
| 2,0
| 6,0
| 2,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| 20,0
| 10,0
| 25,0
| 40,0
| 2,0
| 6,0
| 2,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| 25,0
| 15,0
| 25,0
| 30,0
| 3,0
| 4,0
| 3,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| -5,0
| -10,0
| -35,0
| 25,0
| 2,0
| 4,0
| 2,0
| 2,0
| 8,0
| 26,0
| 20,0
| 26,0
|
| -8,0
| -12,0
| -40,0
| 25,0
| 2,0
| 4,0
| 2,0
| 2,0
| 20,0
| 26,0
| 20,0
| 14,0
|
| -12,0
| -10,0
| -42,0
| 25,0
| 2,0
| 4,0
| 2,0
| 2,0
| 15,0
| 26,0
| 25,0
| 14,0
|
| 30,0
| -18,0
| -15,0
| 23,0
| 1,0
| 2,0
| 2,0
| 3,0
| 4,0
| 8,0
| 20,0
| 10,0
|
| 15,0
| -30,0
| -40,0
| 25,0
| 2,0
| 2,0
| 2,0
| 1,0
| 12,0
| 16,0
| 5,0
| 10,0
|
| -15,0
| 20,0
| -20,0
| 25,0
| 2,0
| 2,0
| 2,0
| 1,0
| 13,0
| 10,0
| 10,0
| 10,0
|
| 40,0
| 30,0
| -20,0
| -30,0
| 2,0
| 2,0
| 2,0
| 2,0
| 20,0
| 10,0
| 10,0
| 12,0
|
| 50,0
| -10,0
| -30,0
| -10,0
| 2,0
| 2,0
| 2,0
| 2,0
| 10,0
| 10,0
| 20,0
| 12,0
|
| 10,0
| 10,0
| 20,0
| 20,0
| 2,0
| 2,0
| 2,0
| 2,0
| 20,0
| 16,0
| 24,0
| 12,0
|
| 10,0
| 10,0
| 20,0
| 20,0
| 2,0
| 4,0
| 2,0
| 4,0
| 20,0
| 14,0
| 16,0
| 18,0
|
| 18,0
| 13,0
| 16,0
| 10,0
| 2,0
| 4,0
| 2,0
| 4,0
| 26,0
| 24,0
| 18,0
| 20,0
|
| 10,0
| 20,0
| 20,0
| 10,0
| 4,0
| 2,0
| 4,0
| 2,0
| 20,0
| 14,0
| 16,0
| 18,0
|
| 13,0
| 18,0
| 16,0
| 10,0
| 2,0
| 4,0
| 2,0
| 4,0
| 26,0
| 24,0
| 18,0
| 20,0
|
| 20,0
| 10,0
| 20,0
| 10,0
| 4,0
| 2,0
| 4,0
| 2,0
| 20,0
| 14,0
| 16,0
| 18,0
|
| 20,0
| 7,5
| 12,5
| 10,0
| 1,0
| 2,0
| 2,0
| 3,0
| 4,0
| 8,0
| 20,0
| 10,0
|
| 35,0
| 30,0
| 25,0
| 5,0
| 2,0
| 6,0
| 2,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| 40,0
| 20,0
| 25,0
| 10,0
| 2,0
| 6,0
| 2,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| 30,0
| 25,0
| 25,0
| 15,0
| 3,0
| 4,0
| 3,0
| 4,0
| 8,0
| 24,0
| 40,0
| 4,0
|
| 25,0
| -5,0
| -35,0
| -10,0
| 2,0
| 4,0
| 2,0
| 2,0
| 8,0
| 26,0
| 20,0
| 26,0
|
| 25,0
| -8,0
| -40,0
| -12,0
| 2,0
| 4,0
| 2,0
| 2,0
| 20,0
| 26,0
| 20,0
| 14,0
|
| 25,0
| -12,0
| -42,0
| -10,0
| 2,0
| 4,0
| 2,0
| 2,0
| 15,0
| 26,0
| 25,0
| 14,0
|
| 23,0
| 30,0
| -15,0
| -18,0
| 1,0
| 2,0
| 2,0
| 3,0
| 4,0
| 8,0
| 20,0
| 10,0
|
| 25,0
| 15,0
| -40,0
| -30,0
| 2,0
| 2,0
| 2,0
| 1,0
| 12,0
| 16,0
| 5,0
| 10,0
|
| 25,0
| -15,0
| -20,0
| 20,0
| 2,0
| 2,0
| 2,0
| 1,0
| 13,0
| 10,0
| 10,0
| 10,0
|
| -30,0
| 40,0
| -20,0
| 30,0
| 2,0
| 2,0
| 2,0
| 2,0
| 20,0
| 10,0
| 10,0
| 12,0
|
| -10,0
| 50,0
| -30,0
| -10,0
| 2,0
| 2,0
| 2,0
| 2,0
| 10,0
| 10,0
| 20,0
| 12,0
|
| 20,0
| 10,0
| 20,0
| 10,0
| 2,0
| 2,0
| 2,0
| 2,0
| 20,0
| 16,0
| 24,0
| 12,0
|
| 20,0
| 10,0
| 20,0
| 10,0
| 2,0
| 4,0
| 2,0
| 4,0
| 20,0
| 14,0
| 16,0
| 18,0
|
| 10,0
| 18,0
| 16,0
| 13,0
| 2,0
| 4,0
| 2,0
| 4,0
| 26,0
| 24,0
| 18,0
| 20,0
|
| 10,0
| 10,0
| 20,0
| 20,0
| 4,0
| 2,0
| 4,0
| 2,0
| 20,0
| 14,0
| 16,0
| 18,0
|
| 10,0
| 13,0
| 16,0
| 18,0
| 2,0
| 4,0
| 2,0
| 4,0
| 26,0
| 24,0
| 18,0
| 20,0
|
| 10,0
| 20,0
| 20,0
| 10,0
| 4,0
| 2,0
| 4,0
| 2,0
| 20,0
| 14,0
| 16,0
| 18,0
|
Ответы Задачи 11
Задача 11a(вар. 1-36)
Ua
| Ub
| Uc
| Ud
| Ue
| Uf
| Ug
| Uh
| Ui
| S
| вар
| 0,0
| 0,0
| 25,0
| 25,0
| 30,0
| 30,0
| 10,0
| 10,0
| 45,0
| 175,0
|
| 0,0
| 0,0
| 7,5
| 7,5
| 17,5
| 17,5
| 5,0
| 5,0
| 25,0
| 85,0
|
| 0,0
| 0,0
| 30,0
| 30,0
| 35,0
| 35,0
| 10,0
| 10,0
| 45,0
| 195,0
|
| 0,0
| 0,0
| 20,0
| 20,0
| 30,0
| 30,0
| 5,0
| 5,0
| 45,0
| 155,0
|
| 0,0
| 0,0
| 25,0
| 25,0
| 40,0
| 40,0
| 15,0
| 15,0
| 45,0
| 205,0
|
| 0,0
| 0,0
| -5,0
| -5,0
| -15,0
| -15,0
| 20,0
| 20,0
| 45,0
| 45,0
|
| 0,0
| 0,0
| -8,0
| -8,0
| -20,0
| -20,0
| 20,0
| 20,0
| 45,0
| 29,0
|
| 0,0
| 0,0
| -12,0
| -12,0
| -22,0
| -22,0
| 20,0
| 20,0
| 45,0
| 17,0
|
| 0,0
| 0,0
| 30,0
| 30,0
| 12,0
| 12,0
| 27,0
| 27,0
| 50,0
| 188,0
|
| 0,0
| 0,0
| 15,0
| 15,0
| -15,0
| -15,0
| 25,0
| 25,0
| 50,0
| 100,0
|
| 0,0
| 0,0
| -15,0
| -15,0
| 5,0
| 5,0
| 25,0
| 25,0
| 50,0
| 80,0
|
| 0,0
| 0,0
| 40,0
| 40,0
| 70,0
| 70,0
| 90,0
| 90,0
| 60,0
| 460,0
|
| 0,0
| 0,0
| 50,0
| 50,0
| 40,0
| 40,0
| 70,0
| 70,0
| 60,0
| 380,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 20,0
| 20,0
| 0,0
| 0,0
| 20,0
| 80,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 20,0
| 20,0
| 0,0
| 0,0
| 20,0
| 80,0
|
| 0,0
| 0,0
| 18,0
| 18,0
| 31,0
| 31,0
| 15,0
| 15,0
| 25,0
| 153,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 30,0
| 30,0
| 10,0
| 10,0
| 20,0
| 120,0
|
| 0,0
| 0,0
| 13,0
| 13,0
| 31,0
| 31,0
| 15,0
| 15,0
| 25,0
| 143,0
|
| 0,0
| 0,0
| 20,0
| 20,0
| 30,0
| 30,0
| 10,0
| 10,0
| 20,0
| 140,0
|
| 0,0
| 0,0
| 20,0
| 20,0
| 27,5
| 27,5
| 15,0
| 15,0
| 25,0
| 150,0
|
| 0,0
| 0,0
| 35,0
| 35,0
| 65,0
| 65,0
| 40,0
| 40,0
| 45,0
| 325,0
|
| 0,0
| 0,0
| 40,0
| 40,0
| 60,0
| 60,0
| 35,0
| 35,0
| 45,0
| 315,0
|
| 0,0
| 0,0
| 30,0
| 30,0
| 55,0
| 55,0
| 30,0
| 30,0
| 45,0
| 275,0
|
| 0,0
| 0,0
| 25,0
| 25,0
| 20,0
| 20,0
| 55,0
| 55,0
| 45,0
| 245,0
|
| 0,0
| 0,0
| 25,0
| 25,0
| 17,0
| 17,0
| 57,0
| 57,0
| 45,0
| 243,0
|
| 0,0
| 0,0
| 25,0
| 25,0
| 13,0
| 13,0
| 55,0
| 55,0
| 45,0
| 231,0
|
| 0,0
| 0,0
| 23,0
| 23,0
| 53,0
| 53,0
| 68,0
| 68,0
| 50,0
| 338,0
|
| 0,0
| 0,0
| 25,0
| 25,0
| 40,0
| 40,0
| 80,0
| 80,0
| 50,0
| 340,0
|
| 0,0
| 0,0
| 25,0
| 25,0
| 10,0
| 10,0
| 30,0
| 30,0
| 50,0
| 180,0
|
| 0,0
| 0,0
| -30,0
| -30,0
| 10,0
| 10,0
| 30,0
| 30,0
| 60,0
| 80,0
|
| 0,0
| 0,0
| -10,0
| -10,0
| 40,0
| 40,0
| 70,0
| 70,0
| 60,0
| 260,0
|
| 0,0
| 0,0
| 20,0
| 20,0
| 30,0
| 30,0
| 10,0
| 10,0
| 20,0
| 140,0
|
| 0,0
| 0,0
| 20,0
| 20,0
| 30,0
| 30,0
| 10,0
| 10,0
| 20,0
| 140,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 28,0
| 28,0
| 12,0
| 12,0
| 25,0
| 125,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 20,0
| 20,0
| 0,0
| 0,0
| 20,0
| 80,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 23,0
| 23,0
| 7,0
| 7,0
| 25,0
| 105,0
|
| 0,0
| 0,0
| 10,0
| 10,0
| 30,0
| 30,0
| 10,0
| 10,0
| 20,0
| 120,0
|
|
Ответы Задача 11b, c(вар. 1-36)
|
| Позиция
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Вар
| Ua
| Ub
| Uc
| Ud
| Ue
| Uf
| Ug
| Uh
| Ui
| S
| 11-c
|
| 0,0
| -2,0
| 5,0
| 1,0
| 10,0
| 0,0
| -13,5
| -18,5
| 0,0
| -18,0
|
|
| 0,0
| -4,0
| 25,0
| 13,0
| 15,0
| -5,0
| -31,0
| -33,0
| 0,0
| -20,0
|
|
| 0,0
| -4,0
| 15,0
| 3,0
| 10,0
| -10,0
| -36,0
| -38,0
| 0,0
| -60,0
|
|
| 0,0
| -4,0
| 19,5
| 7,5
| 20,5
| 0,5
| -26,0
| -28,0
| 0,0
| -10,0
|
|
| 0,0
| -4,0
| -10,0
| -23,0
| -35,0
| -45,0
| -11,0
| -24,0
| 0,0
| -152,0
|
|
| 0,0
| -10,0
| -19,0
| -32,0
| -46,0
| -56,0
| -17,0
| -24,0
| 0,0
| -204,0
|
|
| 0,0
| -7,5
| -20,5
| -33,5
| -45,5
| -58,0
| -17,0
| -24,0
| 0,0
| -206,0
|
|
| 0,0
| -4,0
| 25,0
| 17,0
| -3,0
| -23,0
| -10,0
| -20,0
| 0,0
| -18,0
|
|
| 0,0
| -12,0
| 1,0
| -15,0
| -47,0
| -52,0
| -14,0
| -24,0
| 0,0
| -163,0
|
|
| 0,0
| -13,0
| -30,0
| -40,0
| -22,0
| -32,0
| -14,0
| -24,0
| 0,0
| -175,0
|
|
| 0,0
| -20,0
| 18,0
| 8,0
| 36,0
| 26,0
| 44,0
| 32,0
| 0,0
| 144,0
|
|
| 0,0
| -10,0
| 38,0
| 28,0
| 16,0
| -4,0
| 24,0
| 12,0
| 0,0
| 104,0
|
|
| 0,0
| -5,0
| 4,5
| 0,5
| 10,0
| 4,0
| -16,5
| -19,5
| 0,0
| -22,0
|
|
| 0,0
| -5,0
| 4,5
| 1,0
| 10,0
| 6,0
| -14,5
| -19,0
| 0,0
| -17,0
|
|
| 0,0
| -6,5
| 11,0
| 5,0
| 17,0
| 12,5
| -4,0
| -9,0
| 0,0
| 26,0
|
|
| 0,0
| -5,0
| 4,0
| 0,5
| 20,0
| 16,0
| -5,0
| -9,5
| 0,0
| 21,0
|
|
| 0,0
| -6,5
| 6,0
| 0,0
| 17,0
| 12,5
| -4,0
| -9,0
| 0,0
| 16,0
|
|
| 0,0
| -5,0
| 14,0
| 10,5
| 20,0
| 16,0
| -5,0
| -9,5
| 0,0
| 41,0
|
|
| 0,0
| -2,0
| 17,5
| 13,5
| 20,0
| 10,0
| -3,5
| -8,5
| 0,0
| 47,0
|
|
| 0,0
| -4,0
| 30,0
| 18,0
| 45,0
| 25,0
| -1,0
| -3,0
| 0,0
| 110,0
|
|
| 0,0
| -4,0
| 35,0
| 23,0
| 40,0
| 20,0
| -6,0
| -8,0
| 0,0
| 100,0
|
|
| 0,0
| -4,0
| 24,5
| 12,5
| 35,5
| 15,5
| -11,0
| -13,0
| 0,0
| 60,0
|
|
| 0,0
| -4,0
| 20,0
| 7,0
| 0,0
| -10,0
| 24,0
| 11,0
| 0,0
| 48,0
|
|
| 0,0
| -10,0
| 14,0
| 1,0
| -9,0
| -19,0
| 20,0
| 13,0
| 0,0
| 10,0
|
|
| 0,0
| -7,5
| 16,5
| 3,5
| -10,5
| -23,0
| 18,0
| 11,0
| 0,0
| 8,0
|
|
| 0,0
| -4,0
| 18,0
| 10,0
| 38,0
| 18,0
| 31,0
| 21,0
| 0,0
| 132,0
|
|
| 0,0
| -12,0
| 11,0
| -5,0
| 8,0
| 3,0
| 41,0
| 31,0
| 0,0
| 77,0
|
|
| 0,0
| -13,0
| 10,0
| 0,0
| -17,0
| -27,0
| -9,0
| -19,0
| 0,0
| -75,0
|
|
| 0,0
| -20,0
| -52,0
| -62,0
| -24,0
| -34,0
| -16,0
| -28,0
| 0,0
| -236,0
|
|
| 0,0
| -10,0
| -22,0
| -32,0
| 16,0
| -4,0
| 24,0
| 12,0
| 0,0
| -16,0
|
|
| 0,0
| -5,0
| 14,5
| 10,5
| 20,0
| 14,0
| -6,5
| -9,5
| 0,0
| 38,0
|
|
| 0,0
| -5,0
| 14,5
| 11,0
| 20,0
| 16,0
| -4,5
| -9,0
| 0,0
| 43,0
|
|
| 0,0
| -6,5
| 3,0
| -3,0
| 14,0
| 9,5
| -7,0
| -12,0
| 0,0
| -2,0
|
|
| 0,0
| -5,0
| 4,0
| 0,5
| 10,0
| 6,0
| -15,0
| -19,5
| 0,0
| -19,0
|
|
| 0,0
| -6,5
| 3,0
| -3,0
| 9,0
| 4,5
| -12,0
| -17,0
| 0,0
| -22,0
|
|
| 0,0
| -5,0
| 4,0
| 0,5
| 20,0
| 16,0
| -5,0
| -9,5
| 0,0
| 21,0
|
|
|