Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Potential transformer Power transformer Auto transformer Current transformer Potential transformer Power transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 95 % 75% 65% 85% 95 % 75% 65% 85% ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Energy efficiency None of the listed here Current efficiency Power efficiency Energy efficiency None of the listed here Current efficiency Power efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find None of the listed here Cu loss at any desire load Cu loss at no load Iron loss at no load None of the listed here Cu loss at any desire load Cu loss at no load Iron loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has All of the listed here Low hysteresis loss High silicon content High permeability All of the listed here Low hysteresis loss High silicon content High permeability ANSWER DOWNLOAD EXAMIANS APP
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