When two AC generators are being paralleled, the breaker should be closed with the synchroscope pointer mating in the （）
1、When two fire hose teams are attacking
When two fire hose teams are attacking a fire they should（）.Ause different fire hose pressuresBuse fire hoses of different sizesCnot attack the fire from opposite sidesDnot wear protective clothing
2、When two different metals are joined t
When two different metals are joined to form a closed circuit and exposed to different temperatures at their junctions （） which can be used to measure temperature.Aa current will flowBa power will developCa heat will flowDa pressure will produce
3、When two lines are spliced together,（）
When two lines are spliced together,（）.AThe size of the lines at the splice decreasesBThey are stronger than if knotted togetherCThe overall strength of each line is increasedDThe bitter ends will resist rotting
4、When two DC generators operate in para
When two DC generators operate in parallel, they are protected against motorizing by（）Ablow out coilsBgovernor relayCunder voltage tripsDreverse current tri
5、You are attempting to parallel two AC
You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow directionThis indicates that the frequenc...
6、If two AC generators are to be operate
If two AC generators are to be operated in parallel, the load is distributed evenly by（）Ameans of rheostat the governor settingsBa balance coil excitationCadjusting the governor settingsDchanging excitatio