Transformers Which of the following property is not necessarily desirable in the material for transformer core? Low hysteresis loss High permeability Mechanical strength High thermal conductivity Low hysteresis loss High permeability Mechanical strength High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer does not posses ______changing property. Current Power Impedance Voltage Current Power Impedance Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at no load at full load at 50% full load at 80% full load at no load at full load at 50% full load at 80% full load ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Total equivalent leakage reactance Total equivalent resistance Copper losses Turn ratio Total equivalent leakage reactance Total equivalent resistance Copper losses Turn ratio ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small ANSWER DOWNLOAD EXAMIANS APP
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