Transformers By laminating the core of a transformer, we decrease _____ Copper loss Leakage reactance Eddy current loss Hysteresis loss Copper loss Leakage reactance Eddy current loss Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High permeability All of the listed here High silicon content Low hysteresis loss High permeability All of the listed here High silicon content Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer will work on Dc only Ac only None of the listed here AC as well as DC Dc only Ac only None of the listed here AC as well as DC ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ None of the listed here Primary reactance is too much increased Core losses will be excessive Primary will draw large power None of the listed here Primary reactance is too much increased Core losses will be excessive Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be Ns (l-s)Ns s.N. (Ns-l)s Ns (l-s)Ns s.N. (Ns-l)s ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 95% 80% 50% 65% 95% 80% 50% 65% ANSWER DOWNLOAD EXAMIANS APP
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