1Crawling in an induction motor is caused by:AHigh slip onlyBLow voltage onlyCSpace harmonics in the air-gap fieldDDC supplyView AnswerDiscussWorkspaceReportSaveEasy
2An induction motor is also called an:AAsynchronous motorBSynchronous motorCDC motorDStepper motorView AnswerDiscussWorkspaceReportSaveEasy
3At standstill, the slip of an induction motor is:A0.5BInfiniteC0D1View AnswerDiscussWorkspaceReportSaveEasy
4The synchronous speed of a 4-pole motor on a 50 Hz supply is:A3000 rpmB1000 rpmC1500 rpmD750 rpmView AnswerDiscussWorkspaceReportSaveMedium
5Induction motors are widely used because they are:ARugged, simple and low-maintenanceBSynchronousCVariable-speed by defaultDDC poweredView AnswerDiscussWorkspaceReportSaveEasy