29. The output current corresponding to maxımur efficiency for a transformer having core loss of 100 W and equivalent resistance referred to secondary of 0.25 N is .. ampere. (a) 20 (b) 25 (c) 5 (d) 400 30. The maximum efficiency of a 100-kVA trans- former having iron loss of 900 kW and F.L. Cu loss of 1600 W occurs at ... kVA. (a) 56.3 (b) 133.3 (c) 75 (d) 177.7

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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29.
The output current corresponding to maximum
efficiency for a transformer having core loss of
100 W and equivalent resistance referred to
secondary of 0.25 Q is . ampere.
(a) 20
(b) 25
(c) 5
(d) 400
30. The maximum efficiency of a 100-kVA trans-
former having iron loss of 900 kW and F.L. Cu
loss of 160O W occurs at ... kVA.
(a) 56.3
(b) 133.3
(c) 75
(d) 177.7
Transcribed Image Text:29. The output current corresponding to maximum efficiency for a transformer having core loss of 100 W and equivalent resistance referred to secondary of 0.25 Q is . ampere. (a) 20 (b) 25 (c) 5 (d) 400 30. The maximum efficiency of a 100-kVA trans- former having iron loss of 900 kW and F.L. Cu loss of 160O W occurs at ... kVA. (a) 56.3 (b) 133.3 (c) 75 (d) 177.7
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