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Three-Phase Systems in Power Applications

Q1:

A two-phase generator is connected to two 90  load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?

A 1.33 A

B 1.88 A

C 2.66 A

D 1.77 A

ANS:D - 1.77 A

The circuit will be balanced due to the same amount of load on both phases and so the current through the neutral wire must be zero.



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