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 more than 15 A less than 15 A None of these 15 A more than 15 A less than 15 A None of these 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer routine efficiency depends upon Both power factor and load current Supply frequency Power factor of load Load current Both power factor and load current Supply frequency Power factor of load Load current ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Self induction Dynamic induction Mutual induction Static induction Self induction Dynamic induction Mutual induction Static induction ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 0.85 V 0 V 1.7 V 1 V 0.85 V 0 V 1.7 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? All of these Overfluxing protection Overcurrent protection Buchholz relay All of these Overfluxing protection Overcurrent protection Buchholz relay ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of cooling a power transformer is air blast cooling natural air cooling Any of these oil cooling air blast cooling natural air cooling Any of these oil cooling ANSWER DOWNLOAD EXAMIANS APP
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