频率不一样.这种差异在变压器和电动机中体现明显.
额定频率50Hz的变压器使用在60Hz频率下会是效率和可靠性下降.额定频率50Hz的电动机使用在60Hz的频率下会是转速过高提前老化故障.
猜你喜欢
- 1《夹竹桃》一文中“但是香气却毫不含糊,浓浓烈烈地从花枝上袭了下来.”中的“袭”的妙处是什么?
- 2They didn't ask her to do the job because she was ill.
- 3Something was wrong with my car, so Mr. Smith l____ his to me.
- 4We can't eat out of our hands;he is dishonest什么意思
- 5函数y=(x-4)的0次方/lg(x-2)的定义域是多少
- 6为什么不用廉颇和蔺相如的故事做题目而用将相和做题目呢
- 7Many people go to school for education.They learn languages,history,politics,mathematics and so on
- 8Jim is good-looking.( 就划线部分提问) ________ ________ Jim _______ ________
- 9( )1.A：Thanks a lot .B：______ A.That's all right B:That 's right C:All right
- 10fall into ruins 和fall into ruin的区别