Transformers Which of the following 3 phase connections of transformer create disturbances in communication systems Delta/Delta Delta/Star Star/Star Star/Delta Delta/Delta Delta/Star Star/Star Star/Delta ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. Thickness of core lamination Square of thickness of core lamination The flux density in the core The supply frequency Thickness of core lamination Square of thickness of core lamination The flux density in the core The supply frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Wood Copper Silicon steel Aluminium Wood Copper Silicon steel Aluminium ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ None of the listed here Permeability of core is increased Primary reactance is too much increased Magnetising current is abnormally high None of the listed here Permeability of core is increased Primary reactance is too much increased Magnetising current is abnormally high ANSWER DOWNLOAD EXAMIANS APP
Transformers Open circuit test on transformers is conducted to determine hysteresis losses eddy current losses core losses copper losses hysteresis losses eddy current losses core losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 120 V 2,400 V 240 V 12 V 120 V 2,400 V 240 V 12 V ANSWER DOWNLOAD EXAMIANS APP
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