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Engine : Electricity - 54/1386
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In testing a three-phase delta-connected winding for an open circuit using a ohmmeter, what must be done?
A) measure the voltage across the open connections while testing
B) test the windings as parallel groups to avoid short circuiting
C) if possible, open the delta-connections to avoid shunting the phase being tested
D) test each phase with all connections intact
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