1Alternators in power stations are:AInduction generatorsBTransformersCSynchronous generatorsDDC generatorsView AnswerDiscussWorkspaceReportSaveEasy
2For a 50 Hz alternator running at 3000 rpm, the number of poles is:A8B4C6D2View AnswerDiscussWorkspaceReportSaveMedium
3The V-curves of a synchronous motor show armature current against:ASpeedBVoltage onlyCFrequencyDField currentView AnswerDiscussWorkspaceReportSaveEasy
4The synchronous speed formula is:ANs = 60f / PBNs = 120f / PCNs = fP / 120DNs = 120P / fView AnswerDiscussWorkspaceReportSaveEasy
5Hydro-power alternators usually have:ACylindrical rotors with 2 polesBDC armatureCNo field windingDSalient-pole rotors with many polesView AnswerDiscussWorkspaceReportSaveEasy