Тема:
Мощность цепи постоянного тока. Баланс мощностей

Вопрос:


Если  а  (см. рис.), то во внутреннем сопротивлении источника преобразуется в теплоту ____ % его энергии.

Ответы:
+ 10

− 90

− 50

− 100
Решение:
КПД источника определяется отношением мощностей приемника и источника ЭДС:
Это означает, что  энергии источника преобразуется в теплоту в сопротивлении
ответ тест i-exam
Похожие вопросы:
Прочитайте текст и восстановите пропущенные слова под номером 9
ARNOLD SCHWARZENEGGER
 I was born in a little Austrian town, outside Graz. When I was ten years old, I had the dream of being the best in the world in something. When I was fifteen, I had a dream that I wanted to be the best body 1 _____ in the world and the most muscular man. It took me some time of hard work. Five years later, I became Mr. Universe, the best-built man in the world.  I hold the record as Mr. Olympia, the top professional body-building championship. I 2 _____ it six times. That's why I retired. There was 3 ____ even close to me. Everybody gave up competing against me. When I was a small boy, my dream was not to be big physically, but big in way that everybody 4 ____ to me when I talk, that I’m a very 5 ____ person, that people recognize me and see me as something special.
I have emotions. But what you do, you keep them cold or you store them away for a time. Sport is one of those 6 ____ where you really have to concentrate. You have to 7 _____ at a very early date what you want: a normal life or to achieve things you want to achieve. I never wanted to win a popularity contest in doing things the way people want me to do it. I went the road I thought was best for me.
I believed very strongly in the philosophy of staying hungry. If you have a dream and it becomes a reality, don't stay 8 ____ with it too long. 9 ____ a new dream and hunt after that one and 10 _____ it into reality. When you have that dream achieved, make up a new dream.