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 The efficiency of a transformer will be maximum when ______ Resistance of the two winding are equal Copper loss is equal to constant loss None of the listed here Leakage reactance of the two winding Resistance of the two winding are equal Copper loss is equal to constant loss None of the listed here Leakage reactance of the two winding ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Copper losses Turn ratio Total equivalent resistance Total equivalent leakage reactance Copper losses Turn ratio Total equivalent resistance Total equivalent leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Current device Power device Main flux device Voltage device Current device Power device Main flux device Voltage device ANSWER DOWNLOAD EXAMIANS APP
Transformers The path of the magnetic flux in transformer should have low resistance high reluctance high resistance low reactance low resistance high reluctance high resistance low reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The core type transformer provides _______ Shorter magnetic path Much longer magnetic path Lesser average length per turn None of the listed here Shorter magnetic path Much longer magnetic path Lesser average length per turn None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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