Transformers The turns ratio required to match an 80 source to a 320 load is 2 4 20 80 2 4 20 80 ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Equal to None of the listed here Less than Higher than Equal to None of the listed here Less than Higher than ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Power transformer Voltage transformer Current transformer Auto transformer Power transformer Voltage transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers How are transformers generally cooled for installations rated at less than 5kVA ? Water cooled None of the listed here Air cooled Oil cooled Water cooled None of the listed here Air cooled Oil cooled 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 copper losses magnetic losses friction and windage losses hysteresis and eddy current losses copper losses magnetic losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 80% 65% 95% 50% 80% 65% 95% 50% ANSWER DOWNLOAD EXAMIANS APP
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