A、frequency
B、number of phases
C、phase rotation
D、All of the above
更多“When paralleled, AC generators must have the same （）”相关的问题
A、To cut out generators when they are no longer required B、To cut in additional generators automatically as required C、To divide the KW load equally between generators operating in parallel D、To divide reactive current between generators operating in parallel
A、in series with the power source and load B、in parallel with the power source and load C、insuring correct polarity D、using the lowest range possible to prevent instrument damage
A、slightly less than the line frequency B、the same as the line frequency C、slightly greater than the line frequency D、All of the above
A、slightly less than the oncoming generator frequency B、the same as the bus frequency C、slightly greater than the bus frequency D、the same as the bus voltage
A、When it is a DC machine B、When it is an AC machine C、Any machine that operates on over 100 volts D、Only when working on wet steel plates
A、voltage regulator B、reverse power relay C、reverse current relay D、governor control switch
A、A."slow" direction, just before the 12 o'clock position B、B."fast" direction, just after the 12 o'clock position C、C."fast" direction, just before the 12 o'clock position D、D."slow" direction, just after the 12 o'clock position
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