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Консультация № 199543
06.11.2020, 23:50
0.00 руб.
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Для заданного варианта цепи переменного тока:
1) Определить ток и напряжение на каждом элементе используя комплексный метод.
2)Построить векторную диаграмму тока и напряжений
3)Определить значение емкости или индуктивности при котором возникает резонанс напряжений и значение резонансного тока
Числовые данные:
U=9 В, f=50 Гц,
R1=5 Ом, R2=2 Ом,
С1=640 мкФ, С2=520 мкФ,
L1=20 мГн, L2=10 мГн
Для заданного варианта цепи переменного тока:
1) Определить ток и напряжение на каждом элементе используя комплексный метод.
2)Построить векторную диаграмму тока и напряжений
3)Определить значение емкости или индуктивности при котором возникает резонанс напряжений и значение резонансного тока
Числовые данные:
U=9 В, f=50 Гц,
R1=5 Ом, R2=2 Ом,
С1=640 мкФ, С2=520 мкФ,
L1=20 мГн, L2=10 мГн
Прикрепленные файлы:
Обсуждение
11.11.2020, 13:44
общий
это ответ
Здравствуйте, iranisimova36@gmail.com!
Условие : U = 9 В ; f = 50 Гц ; R1 = 5 Ом ; R2 = 2 Ом ; С1 = 640 мкФ ; С2 = 520 мкФ ; L1 = 20 мГн ; L2 = 10 мГн .
1) Вычислить ток в эл-цепи и напряжение на каждом элементе;
2) Построить векторную диаграмму тока и напряжений;
3) Вычислить значение ёмкости или индуктивности при котором возникает резонанс напряжений и значение резонансного тока.
Решение : Поскольку электро-цепь простая и НЕ разветвлённая, то просто складываем геометрически комплексные сопротивления всех элементов цепи. А затем получим ток, разделив напряжение источника на общее сопротивление (по закону Ома).
Дальнейшие вычисления, проверку и построение векторной диаграммы я сделал в вычислителе Маткад (ссылка) . Маткад-скриншот прилагаю. Я добавил в него подробные комментарии зелёным цветом.
Ответ : Ток в цепи равен 1,25 А (1,22+0,3j) . Для увеличения тока до резонансного 1,29 А надо увеличить индуктивное сопротивление (например заменить L2 на L3 = 15 мГн) либо уменьшить ёмкостное сопротивление.
Условие : U = 9 В ; f = 50 Гц ; R1 = 5 Ом ; R2 = 2 Ом ; С1 = 640 мкФ ; С2 = 520 мкФ ; L1 = 20 мГн ; L2 = 10 мГн .
1) Вычислить ток в эл-цепи и напряжение на каждом элементе;
2) Построить векторную диаграмму тока и напряжений;
3) Вычислить значение ёмкости или индуктивности при котором возникает резонанс напряжений и значение резонансного тока.
Решение : Поскольку электро-цепь простая и НЕ разветвлённая, то просто складываем геометрически комплексные сопротивления всех элементов цепи. А затем получим ток, разделив напряжение источника на общее сопротивление (по закону Ома).
Дальнейшие вычисления, проверку и построение векторной диаграммы я сделал в вычислителе Маткад (ссылка) . Маткад-скриншот прилагаю. Я добавил в него подробные комментарии зелёным цветом.
Ответ : Ток в цепи равен 1,25 А (1,22+0,3j) . Для увеличения тока до резонансного 1,29 А надо увеличить индуктивное сопротивление (например заменить L2 на L3 = 15 мГн) либо уменьшить ёмкостное сопротивление.
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