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