Transformers The approximate efficiency of a large transformer is 65% 80% 50% 95% 65% 80% 50% 95% ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Iron losses Total losses Copper losses Friction losses Iron losses Total losses Copper losses Friction losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Power transformer Current transformer Voltage transformer Auto transformer Power transformer Current transformer Voltage transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ Directly proportional to supply frequency None of the listed here Inversely proportional to primary voltage Inversely proportional to supply frequency Directly proportional to supply frequency None of the listed here Inversely proportional to primary voltage Inversely proportional to supply frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Turn ratio Total equivalent resistance Total equivalent leakage reactance Copper losses Turn ratio Total equivalent resistance Total equivalent leakage reactance Copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are friction and windage losses hysteresis and eddy current losses magnetic losses copper losses friction and windage losses hysteresis and eddy current losses magnetic losses copper losses ANSWER DOWNLOAD EXAMIANS APP
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