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