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? 95 % 65% 75% 85% 95 % 65% 75% 85% ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Current efficiency None of the listed here Power efficiency Energy efficiency Current efficiency None of the listed here Power efficiency Energy efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find Cu loss at no load None of the listed here Cu loss at any desire load Iron loss at no load Cu loss at no load None of the listed here Cu loss at any desire load Iron loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has High permeability Low hysteresis loss All of the listed here High silicon content High permeability Low hysteresis loss All of the listed here High silicon content ANSWER DOWNLOAD EXAMIANS APP
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