1.

A current density of _____ is ilsed for large power transformers with forced circulationof oil or with water cooling coils

A. 1.5 to 2.5 A/mm2
B. 3.5 to 4.5 A/mm2
C. 4.0 to 5.0 A/mm2
D. 5.4 to 6.2 A/mm2
Answer» E.


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