20.一容量為9.5kVA之變壓器接至功率因數為1.0之負載,其鐵損為100W,若其滿載時之效率為95%,則其最大效率約為何?
(A)96%
(B)97%
(C)98%
(D)99%
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統計: A(78), B(24), C(53), D(20), E(0) #2718050
統計: A(78), B(24), C(53), D(20), E(0) #2718050