Transformers The efficiencies of transformers compared with that of electric motors of the same power are somewhat smaller much smaller about the same much higher somewhat smaller much smaller about the same much higher ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 78 Ω 7.8 Ω 1.3 Ω 13 Ω 78 Ω 7.8 Ω 1.3 Ω 13 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 250 kVA 1000 kVA 3000 kVA 500 kVA 250 kVA 1000 kVA 3000 kVA 500 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 15-30% 3-5% Above 40% 30-40% 15-30% 3-5% Above 40% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 1:2 Can be any ratio 2:1 1:1 1:2 Can be any ratio 2:1 1:1 ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Copper losses Leakage reactance Iron losses Winding resistance Copper losses Leakage reactance Iron losses Winding resistance ANSWER DOWNLOAD EXAMIANS APP
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