Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of None of these more than 15 A less than 15 A 15 A None of these more than 15 A less than 15 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary reactance is too much increased Core losses will be excessive None of the listed here Primary will draw large power Primary reactance is too much increased Core losses will be excessive None of the listed here Primary will draw large power ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Main flux device Power device Voltage device Current device Main flux device Power device Voltage device Current device ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load? 7.3 V 880 V 73 V 88 V 7.3 V 880 V 73 V 88 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ Water cooled Oil cooled None of the listed here Natural air cooled Water cooled Oil cooled None of the listed here Natural air cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Is increased Is decreased None of the listed here Remians unchanged Is increased Is decreased None of the listed here Remians unchanged ANSWER DOWNLOAD EXAMIANS APP
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