题目内容

For two generators running online in parallel, if we only increase oil throttle of one generator, and keep another generator unchanged, then it will lead to ( ).

A. decrease of frequency
B. increase of frequency
C. vibration of frequency
D. decrease of voltage

查看答案

搜索结果不匹配？点我反馈

更多问题

The reason for the failure of synchronizing operation, the reason cann’t be ( ) for the generator under normal running condition.

A. improper operation, random switching on under conditions that do not meet parallel operation conditions
B. failure to shift loads in time after the synchronizing operation is finished
C. The online generator is running under no-load
D. phase sequence is not the same

查看答案

There are many meters on the synchronizing panel, we should to pay attention to the ( ) carefully when performing the synchronizing operation.

A. field current meter
B. current meter
C. synchro-scope
D. power factor meter

查看答案

When synchroscope is used for synchronizing operation, the lamp will rotate ( ) a circle if the frequency difference is 0.25 Hz.

A. 1s
B. 2s
C. 3s
D. 4s

查看答案

After synchronizing operation, the mainly reason why we cut off the syncro-scope is ( ).

A. power saving
B. synchroscope is for short-time duty
C. out of function for synchroscope
D. cannot shift active power if not cut off synchroscope

查看答案

For two generators running online in parallel, if we only increase oil throttle of one generator, and keep another generator unchanged, then it will lead to ( ).

A. decrease of frequency B. increase of frequency C. vibration of frequency D. decrease of voltage

The reason for the failure of synchronizing operation, the reason cann’t be ( ) for the generator under normal running condition.

There are many meters on the synchronizing panel, we should to pay attention to the ( ) carefully when performing the synchronizing operation.

When synchroscope is used for synchronizing operation, the lamp will rotate ( ) a circle if the frequency difference is 0.25 Hz.

After synchronizing operation, the mainly reason why we cut off the syncro-scope is ( ).

A. decrease of frequency
B. increase of frequency
C. vibration of frequency
D. decrease of voltage