Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Potential transformer Current transformer Auto transformer Power transformer Potential transformer Current transformer Auto transformer Power 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 Energy efficiency None of the listed here Power efficiency Current efficiency Energy efficiency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find 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 Cu loss at any desire load None of the listed here Iron loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High permeability Low hysteresis loss High silicon content All of the listed here High permeability Low hysteresis loss High silicon content All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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