Transformers A no-load test is performed on a transformer to determine efficiency magnetising current core loss copper loss magnetising current and loss efficiency magnetising current core loss copper loss magnetising current and loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 50 per cent 25 per cent 98 per cent 100 per cent 50 per cent 25 per cent 98 per cent 100 per cent ANSWER DOWNLOAD EXAMIANS APP
Transformers The voltage transformation ratio of a transformer is equal to the ratio of secondary terminal voltage to primary applied voltage secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns secondary terminal voltage to primary applied voltage secondary current to primary current secondary induced e.m.f. to primary induced e.m.f. primary turns to secondary turns ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 80% 65% 50% 95% 80% 65% 50% 95% ANSWER DOWNLOAD EXAMIANS APP
Transformers A Buchholz relay can be installed on Oil cooled transformer Welding transformer Auto transformer Air-cooled transformer Oil cooled transformer Welding transformer Auto transformer Air-cooled transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers A shell-type transformer has reduced magnetic leakage high eddy current losses None of these negligibly hysteresis losses reduced magnetic leakage high eddy current losses None of these negligibly hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
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