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