Transformers Harmonics in transformer result in increased core losses All of the listed here magnetic interference with communication circuits increased I2R losses increased core losses All of the listed here magnetic interference with communication circuits increased I2R losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum load that a power transformer can carry is limited by its temperature rise copper loss voltage ratio dielectric strength of oil temperature rise copper loss voltage ratio dielectric strength of oil ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 50% load 90% load 25% load Zero load 50% load 90% load 25% load Zero load ANSWER DOWNLOAD EXAMIANS APP
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 ? 250 Ω 25 Ω 62500 Ω 6250 Ω 250 Ω 25 Ω 62500 Ω 6250 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 9.6 4 0.96 0.4 9.6 4 0.96 0.4 ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Glass fibre Asbestos Mica Cellulose Glass fibre Asbestos Mica Cellulose ANSWER DOWNLOAD EXAMIANS APP
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