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 ? 6250 Ω 25 Ω 250 Ω 62500 Ω 6250 Ω 25 Ω 250 Ω 62500 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be mechanical vibrations poor insulation fluctuating load saturation of core mechanical vibrations poor insulation fluctuating load saturation of core ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 0.85 V 1 V 1.7 V 0 V 0.85 V 1 V 1.7 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. Greater than None of the listed here Smaller than About the same as Greater than None of the listed here Smaller than About the same as ANSWER DOWNLOAD EXAMIANS APP
Transformers The dielectric strength of transformer oil is expected to be 100 kV 33 kV lkV 330 kV 100 kV 33 kV lkV 330 kV ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following 3 phase connections of transformer create disturbances in communication systems Delta/Delta Star/Delta Star/Star Delta/Star Delta/Delta Star/Delta Star/Star Delta/Star ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS