Transformers The main reason for generation of harmonics in a transformer could be fluctuating load mechanical vibrations poor insulation saturation of core fluctuating load mechanical vibrations poor insulation saturation of core ANSWER DOWNLOAD EXAMIANS APP
Transformers The turns ratio required to match an 80 source to a 320 load is 80 4 2 20 80 4 2 20 ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Copper losses Total losses Iron losses Friction losses Copper losses Total losses Iron losses Friction losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. Reduce core loss None of the listed here Provide tight magnetic coupling Increase the wight Reduce core loss None of the listed here Provide tight magnetic coupling Increase the wight ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 7.8 Ω 78 Ω 1.3 Ω 13 Ω 7.8 Ω 78 Ω 1.3 Ω 13 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ None of the listed here Primary will draw large power Primary reactance is too much increased Core losses will be excessive None of the listed here Primary will draw large power Primary reactance is too much increased Core losses will be excessive ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS