DC generators are classified according to the manner in which()
- Athey are used
- Bthe field windings are connected to the load
- Cthe armature circuit is connected to the load
- Dthe field windings are connected to the armature circuit
DC generators are classified according to the manner in which()
1、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
2、When two AC generators are being paral
When two AC generators are being paralleled, the breaker should be closed with the synchroscope pointer mating in the ()A"slow" direction, jus...
3、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
4、According to the passage, who are like
According to the passage, who are likely to expect the shortest pauses between turns?A Americans.B Israelis.C The British.D The Finns.
5、If two AC generators are operated in p
If two AC generators are operated in parallel, the load is distributed evenly by()Aa rheostatBa balancing coilCchanging field excitationDadjusting the governor setting
6、The purpose of DC generator brushes is
The purpose of DC generator brushes is to ().Aneutralize armature reactionBconduct electric current to an outside circuitCconvert DC current to AC currentDprovide excitation to a DC generator