问题
问答题 简答题
变压器油温升高是什么原因造成的?
答案
参考答案:
引起变压器油温升高的原是:通风受阻;表面和积灰;油路阻塞;输入电压、电流波形严重畸变;匝间短路,铁心片间绝缘损坏;涡流增大及铁心多点接地产生环流等到。
变压器油温升高是什么原因造成的?
参考答案:
引起变压器油温升高的原是:通风受阻;表面和积灰;油路阻塞;输入电压、电流波形严重畸变;匝间短路,铁心片间绝缘损坏;涡流增大及铁心多点接地产生环流等到。
阅读理解。 |
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1. Where is Anne's birthday party going to be held? |
[ ] |
A. In Room 20. B. At 107 Pine Avenue. C. At 3 The Avenue. D. At Jane's place. |
2. Who will meet at 1 p.m.? |
[ ] |
A. Those who will plan Fran's birthday party. B. Those who will play football on Saturday. C. Those who need a lift. D. Those who will celebrate Anne's birthday. |
3. Fran's birthday is _______. |
[ ] |
A. on Friday B. on Thursday C. on Wednesday D. on 7th October |