Transformers The eddy current loss in a transformer is directly proportional to _______. The supply frequency Square of thickness of core lamination The flux density in the core Thickness of core lamination The supply frequency Square of thickness of core lamination The flux density in the core Thickness of core lamination ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Buchholz relay All of these Overcurrent protection Overfluxing protection Buchholz relay All of these Overcurrent protection Overfluxing protection ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ Water cooled None of the listed here Oil cooled Natural air cooled Water cooled None of the listed here Oil cooled Natural air cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Magnetising current is abnormally high Primary reactance is too much increased Permeability of core is increased None of the listed here Magnetising current is abnormally high Primary reactance is too much increased Permeability of core is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High permeability Low hysteresis loss All of the listed here High silicon content High permeability Low hysteresis loss All of the listed here High silicon content ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Natural air cooling Air blast cooling Oil cooling Any of the listed here Natural air cooling Air blast cooling Oil cooling Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
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