6India's national grid operates at a frequency of:A60 HzB50 HzC100 HzD25 HzView AnswerDiscussWorkspaceReportSaveEasy
7Which power plant has the lowest running cost?AGas turbineBDieselCCoal thermalDHydroelectricView AnswerDiscussWorkspaceReportSaveEasy
8Diversity factor is:ASum of individual maximum demands ÷ maximum demand of the systemBEnergy ÷ timeCPeak load ÷ capacityDAverage load ÷ peak loadView AnswerDiscussWorkspaceReportSaveEasy
9String efficiency of a suspension insulator is improved by:AUsing fewer discsBUsing a guard (grading) ringCRemoving earthingDIncreasing frequencyView AnswerDiscussWorkspaceReportSaveEasy
10Suspension insulators are used for line voltages above about:A1 kVB230 VC11 VD33 kVView AnswerDiscussWorkspaceReportSaveEasy