Transformers The primary leakage flux links _____ Secondary winding only Primary winding only Both primary and secondary windings None of the listed here Secondary winding only Primary winding only Both primary and secondary windings None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Magnetising current is abnormally high None of the listed here Permeability of core is increased Primary reactance is too much increased Magnetising current is abnormally high None of the listed here Permeability of core is increased Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ 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 None of the listed here Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Applied voltage is sinusoidal Transformer is not an efficient device Iron core has high permeability Air is not a good magnetic insulator Applied voltage is sinusoidal Transformer is not an efficient device Iron core has high permeability ANSWER DOWNLOAD EXAMIANS APP
Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Copper loss Leakage reactance Iron losses Eddy current loss Copper loss Leakage reactance Iron losses Eddy current loss ANSWER DOWNLOAD EXAMIANS APP
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