Transformers If a power transformer is operated at very high frequencies, then ______ 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 Primary reactance is too much increased Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 3.7 Wb/m² 1.7 Wb/m² 4.7 Wb/m² 2.7 Wb/m² 3.7 Wb/m² 1.7 Wb/m² 4.7 Wb/m² 2.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ None of the listed here Leakage reactance Apparent power Reactive power None of the listed here Leakage reactance Apparent power Reactive power ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the energy is conveyed from primary to secondary through air by the flux None of these through cooling coil through air by the flux None of these through cooling coil ANSWER DOWNLOAD EXAMIANS APP
Transformers The leakage flux in a transformer depends upon load current and voltage load current, voltage and frequency load current, voltage, frequency and power factor load current load current and voltage load current, voltage and frequency load current, voltage, frequency and power factor load current ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Friction losses Iron losses Copper losses Total losses Friction losses Iron losses Copper losses Total losses ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS