Transformers A transformer is an efficient device because Uses capacitive coupling A static device Uses electric coupling Uses inductive coupling Uses capacitive coupling A static device Uses electric coupling Uses inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at no load at 80% full load at 50% full load at full load at no load at 80% full load at 50% full load at full load ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Hysteresis loss is decreased Magnetising current is greatly increased Eddy current is increased Reluctance of magnetic path is decreased Hysteresis loss is decreased Magnetising current is greatly increased Eddy current is increased Reluctance of magnetic path is decreased ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the resistance between its primary and secondary is Zero Infinite 1 ohm 1000 ohms Zero Infinite 1 ohm 1000 ohms ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load current of a transformer has has small magnitude and low power factor has small magnitude and high power factor has high magnitude and high power factor has high magnitude and low power factor has small magnitude and low power factor has small magnitude and high power factor has high magnitude and high power factor has high magnitude and low power factor ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same efficiency same number of turns on the secondary side. same polarity same kVA rating same efficiency same number of turns on the secondary side. same polarity same kVA rating ANSWER DOWNLOAD EXAMIANS APP
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