6An SCR is turned on by:ARemoving gate currentBLight onlyCReverse biasingDA gate pulse when forward biasedView AnswerDiscussWorkspaceReportSaveEasy
7A UPS mainly uses which power electronic converters?AOnly a chopperBOnly a transformerCRectifier, battery charger and inverterDOnly a cycloconverterView AnswerDiscussWorkspaceReportSaveEasy
8A freewheeling diode in a rectifier circuit:AProvides a path for inductive load current when the supply reversesBCharges a capacitorCIncreases the output voltageDBlocks DCView AnswerDiscussWorkspaceReportSaveEasy
9An SMPS is preferred over a linear power supply because it is:AMore efficient and smallerBSimpler and noise-freeCHeavierDCheaper alwaysView AnswerDiscussWorkspaceReportSaveEasy
10A cycloconverter converts:AAC to DCBDC to ACCAC at one frequency to AC at another frequency directlyDDC to DCView AnswerDiscussWorkspaceReportSaveEasy