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一台汽轮发电机，额定功率因数为0．8（滞后)，同步电抗为Xt*=1．0，并联在无穷大电网上运行，求：（

一台汽轮发电机，额定功率因数为0．8(滞后)，同步电抗为Xt*=1．0，并联在无穷大电网上运行，求： (1)供给90％额定电流时的输出有功和无功(额定功率因数)，空载电动势E0和功率角 (2)调节机械输入，使输出有功功率达到额定的110％，如励磁保持不变，则δ角和无功如何变化； (3)如需无功保持不变，如何调节励磁电流，求此时的空载电动势E0和功率角δ。 [提示]用标幺值计算，设端电压为参考相量。

一台汽轮发电机，额定功率因数为0．8（滞后)，同步电抗为Xt*=1．0，并联在无穷大电网上运行，求：

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第1题

Generally speaking, we have got ______ writing and non-fiction writing.

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第2题

Generally speaking, we have got fiction writing and _________ writing.

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第3题

We all do more speaking more speaking ______, even when we have a break after class.A．now

We all do more speaking more speaking ______, even when we have a break after class.

A．now and then

B．by and by

C．step by step

D．more or less

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第4题

Generally speaking, peopleA．feel poor if they have less than many others.B．feel rich if th

Generally speaking, people

A．feel poor if they have less than many others.

B．feel rich if they have more than many others.

C．tend to equate being happy with their feeling relatively rich.

D．tend to expect more if they are richer than their neighbors.

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第5题

Generally speaking, a pie graph should have no more than ____ segments.

A．seven

B．eight

C．nine

D．ten

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第6题

Generally speaking, as long as the ratios for a certain company are available to us, we can have the insight to the company’s performance and financial position.

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第7题

As for the influence of Internet, nowhere （) the results more clearly than in the US.A．we

As for the influence of Internet, nowhere () the results more clearly than in the US.

A．we have seen

B．we had seen

C．seen we have

D．have we seen

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第8题

Generally speaking, compared with the domestic trade, there are more difficulties and risks when we do international trade（）

A．TrueB:False

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第9题

I was so happy to see John again last Sunday. We ______ each other for more than two years.

A．haven't seen

B．hadn't seen

C．have seen

D．had seen

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第10题

Generally speaking, the workers have a good working （agree)______ with the managers in a b

Generally speaking, the workers have a good working (agree)______ with the managers in a big company.

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一台汽轮发电机，额定功率因数为0．8（滞后)，同步电抗为Xt*=1．0，并联在无穷大电网上运行，求： （

一台汽轮发电机，额定功率因数为0．8（滞后)，同步电抗为Xt*=1．0，并联在无穷大电网上运行，求：（