Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Power transformer Auto transformer Potential transformer Current transformer Power transformer Auto transformer Potential transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Is increased Is decreased None of the listed here Remians unchanged Is increased Is decreased None of the listed here Remians unchanged ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum load that a power transformer can carry is limited by its voltage ratio temperature rise dielectric strength of oil copper loss voltage ratio temperature rise dielectric strength of oil copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A Buchholz relay can be installed on Welding transformer Auto transformer Air-cooled transformer Oil cooled transformer Welding transformer Auto transformer Air-cooled transformer Oil cooled transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around Zero load 25% load 90% load 50% load Zero load 25% load 90% load 50% load ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 4.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 1.7 Wb/m² 4.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 1.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
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