Transformers If a transformer core has air gaps, then, _________ Hysteresis loss is decreased Reluctance of magnetic path is decreased Eddy current is increased Magnetising current is greatly increased Hysteresis loss is decreased Reluctance of magnetic path is decreased Eddy current is increased Magnetising current is greatly increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a fitting on a transformer? Buchholz's relay Breather Conservator Commutator Buchholz's relay Breather Conservator Commutator ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer will have zero efficiency at Half full load Full load No load None of the listed here Half full load Full load No load None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High permeability High silicon content Low hysteresis loss All of the listed here High permeability High silicon content Low hysteresis loss All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 20 A 5 A 10 A 15 A 20 A 5 A 10 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Magnetising current is abnormally high Permeability of core is increased Primary reactance is too much increased None of the listed here Magnetising current is abnormally high Permeability of core is increased Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
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