Transformers Which of the following transformer is smallest? 2kVA, 50 Hz 2kVA, 200 Hz 2kVA, 400 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 200 Hz 2kVA, 400 Hz 2kVA, 500 Hz ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. None of the listed here Less than Higher than Equal to None of the listed here Less than Higher than Equal to ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum load that a power transformer can carry is limited by its dielectric strength of oil copper loss temperature rise voltage ratio dielectric strength of oil copper loss temperature rise voltage ratio ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? Mechanical strength High permeability High thermal conductivity Low hysteresis loss Mechanical strength High permeability High thermal conductivity Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Auto transformer Current transformer Potential transformer Power transformer Auto transformer Current transformer Potential transformer Power transformer 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
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