WorksheetsThree Phase understanding
Total questions: 7
Worksheet time: 9mins
Which configuration gives us two values of voltage?
Star
Delta
Star two-phase
Delta four-wire
Measuring across two lines of a star-connected three-phase four-wire
supply system from the local substation would have a voltage of:
230V
400V
25kV
132kV
A load connected to phase and neutral of a star-connected three-phase four-wire supply system from the local substation would have a voltage of:
230V
400V
25kV
132kV
The phase voltage of a star-connected load is 100 V. The line voltage will be:
57.73V
100V
173.2V
230V
The phase voltage of a delta-connected load is 100 V. The line voltage will be:
57.73V
100V
173.2V
230V
The phase current of a star-connected load is 100 A. The line current will be:
57.73A
100A
173.2A
230A
The phase current of a delta-connected load is 100 A. The line current will
be:
57.73A
100A
173.2A
230A
