Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Auto transformer Potential transformer Power transformer Current transformer Auto transformer Potential transformer Power transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Applied voltage and frequency are constant Losses are small Iron core is used Leakage flux is small Applied voltage and frequency are constant Losses are small Iron core is used ANSWER DOWNLOAD EXAMIANS APP
Transformers The path of the magnetic flux in transformer should have low resistance low reactance high reluctance high resistance low resistance low reactance high reluctance high resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine None of these stray losses all-day efficiency temperature None of these stray losses all-day efficiency temperature ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? High permeability Mechanical strength High thermal conductivity Low hysteresis loss High permeability Mechanical strength High thermal conductivity Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine eddy current losses copper losses hysteresis losses core losses eddy current losses copper losses hysteresis losses core losses ANSWER DOWNLOAD EXAMIANS APP
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