Transformers The no load primary current is about ______of full load primary current. 3-5% Above 40% 15-30% 30-40% 3-5% Above 40% 15-30% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of 1:1 2:1 Can be any ratio 1:2 1:1 2:1 Can be any ratio 1:2 ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has All of the listed here High silicon content High permeability Low hysteresis loss All of the listed here High silicon content High permeability Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary reactance is too much increased None of the listed here Core losses will be excessive Primary will draw large power Primary reactance is too much increased None of the listed here Core losses will be excessive Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Current device Main flux device Voltage device Power device Current device Main flux device Voltage device Power device ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 3000 kVA 1000 kVA 500 kVA 250 kVA 3000 kVA 1000 kVA 500 kVA 250 kVA ANSWER DOWNLOAD EXAMIANS APP
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