Transformers A transformer is an efficient device because Uses electric coupling Uses inductive coupling Uses capacitive coupling A static device Uses electric coupling Uses inductive coupling Uses capacitive coupling A static device ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ None of the listed here Primary will draw large power Core losses will be excessive Primary reactance is too much increased None of the listed here Primary will draw large power Core losses will be excessive Primary reactance is too much increased ANSWER DOWNLOAD EXAMIANS APP
Transformers A step up transformer increases Power Frequency Current Voltage Power Frequency Current Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers upto a rating of 3000 kVA 500 kVA 1000 kVA 250 kVA 3000 kVA 500 kVA 1000 kVA 250 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine hysteresis losses copper losses core losses eddy current losses hysteresis losses copper losses core losses eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Step-up transformer Potential transformer Current transformer Auto transformer Step-up transformer Potential transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
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