Transformers Losses which occur in rotating electric machines and do not occur in trans formers are magnetic losses friction and windage losses hysteresis and eddy current losses copper losses magnetic losses friction and windage losses hysteresis and eddy current losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is great than one approximately equal to one None of these less than one great than one approximately equal to one None of these less than one ANSWER DOWNLOAD EXAMIANS APP
Transformers A tap changer is used on a transformer for Adjustment in both primary and secondary None of the listed here Adjustment in primary voltage Adjustments in secondary voltage Adjustment in both primary and secondary None of the listed here Adjustment in primary voltage Adjustments in secondary voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Mutual induction Dynamic induction Self induction Static induction Mutual induction Dynamic induction Self induction Static induction ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 10 A 5 A 15 A 20 A 10 A 5 A 15 A 20 A ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Produces mutually induced emf Is negligible at full load Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Produces mutually induced emf Is negligible at full load ANSWER DOWNLOAD EXAMIANS APP
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