Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 4 μH 2 mH 2 μH 8 μH 4 μH 2 mH 2 μH 8 μH ANSWER DOWNLOAD EXAMIANS APP
Transformers In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues? 14.1 W 111.5 W 1,020 W 0 W 14.1 W 111.5 W 1,020 W 0 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine temperature None of these all-day efficiency stray losses temperature None of these all-day efficiency stray losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Current device Power device Voltage device Main flux device Current device Power device Voltage device Main flux device 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 Eddy losses are totally eliminated Hysteresis losses are reduced Copper losses are negligible Saving in winding material Eddy losses are totally eliminated Hysteresis losses are reduced ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 95% 80% 65% 50% 95% 80% 65% 50% ANSWER DOWNLOAD EXAMIANS APP
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