1.

A 10 MVA, 11 kV alternator has positive, negative and zero sequence reactance of 25%, 40%,10% respectively. The resistance that must be placed in the neutral such that zero sequence of fault current for a single phase to ground fault will not exceed the rated line current in ohms is

A. 2.66
B. 1.66
C. 12.1
D. 0.22
Answer» B. 1.66


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