Transformers The efficiencies of transformers compared with that of electric motors of the same power are much smaller about the same somewhat smaller much higher much smaller about the same somewhat smaller much higher ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Copper losses are negligible Hysteresis losses are reduced Saving in winding material Eddy losses are totally eliminated Copper losses are negligible Hysteresis losses are reduced Saving in winding material Eddy losses are totally eliminated ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformer to determine None of the listed here Stray losses All day efficiency Temperature None of the listed here Stray losses All day efficiency Temperature ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Any of the listed here Oil cooling Natural air cooling Air blast cooling Any of the listed here Oil cooling Natural air cooling Air blast cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Overfluxing protection Buchholz relay Overcurrent protection All of these Overfluxing protection Buchholz relay Overcurrent protection All of these ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 1.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 4.7 Wb/m² 1.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 4.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS