Transformers If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ? 25 Ω 6250 Ω 250 Ω 62500 Ω 25 Ω 6250 Ω 250 Ω 62500 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Copper losses are negligible Saving in winding material Hysteresis losses are reduced Eddy losses are totally eliminated Copper losses are negligible Saving in winding material Hysteresis losses are reduced Eddy losses are totally eliminated ANSWER DOWNLOAD EXAMIANS APP
Transformers By laminating the core of a transformer, we decrease _____ Leakage reactance Eddy current loss Hysteresis loss Copper loss Leakage reactance Eddy current loss Hysteresis loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the energy is conveyed from primary to secondary by the flux through air None of these through cooling coil by the flux through air None of these through cooling coil ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine core loss copper loss efficiency magnetising current and loss magnetising current core loss copper loss efficiency magnetising current and loss magnetising current ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 200 W None of the listed here 100 W 400 W 200 W None of the listed here 100 W 400 W ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS