Transformers The core type transformer is generally suitable for ______ High voltage and small output None of the listed here High voltage and high output Low voltage and high output High voltage and small output None of the listed here High voltage and high output Low voltage and high output ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 95% 50% 65% 80% 95% 50% 65% 80% ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Iron losses Friction losses Copper losses Total losses Iron losses Friction losses Copper losses Total losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 250 kVA 500 kVA 3000 kVA 1000 kVA 250 kVA 500 kVA 3000 kVA 1000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Core losses will be excessive None of the listed here Primary will draw large power Primary reactance is too much increased Core losses will be excessive None of the listed here Primary will draw large power Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Asbestos Cellulose Glass fibre Mica Asbestos Cellulose Glass fibre Mica ANSWER DOWNLOAD EXAMIANS APP
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