11An SCR is turned on by:ALight onlyBReverse biasingCA gate pulse when forward biasedDRemoving gate currentView AnswerDiscussWorkspaceReportSaveEasy
12A buck converter:ASteps DC voltage upBSteps DC voltage downCRectifies ACDInverts ACView AnswerDiscussWorkspaceReportSaveEasy
13Once an SCR is turned on, it stays on until:ALight falls on itBVoltage increasesCIts current falls below the holding currentDThe gate signal is removedView AnswerDiscussWorkspaceReportSaveEasy
14An SMPS is preferred over a linear power supply because it is:ASimpler and noise-freeBHeavierCMore efficient and smallerDCheaper alwaysView AnswerDiscussWorkspaceReportSaveEasy
15The output of a single-phase full-wave controlled rectifier with firing angle α (resistive load) is maximum when α equals:A0°B45°C180°D90°View AnswerDiscussWorkspaceReportSaveEasy