Transformers A transformer is an efficient device because Uses electric coupling Uses inductive coupling A static device Uses capacitive coupling Uses electric coupling Uses inductive coupling A static device Uses capacitive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers No-load on a transformer is carried out to determine magnetising current magnetising current and loss copper loss efficiency of the transformer magnetising current magnetising current and loss copper loss efficiency of the transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer breaths in when load remains constant None of these load on it decreases load on it increases load remains constant None of these load on it decreases load on it increases ANSWER DOWNLOAD EXAMIANS APP
Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 25 W 0 W 250 W 2.5 W 25 W 0 W 250 W 2.5 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it None of these avoids core saturation and high voltage induction is safe to human beings protects the primary circuit None of these avoids core saturation and high voltage induction is safe to human beings protects the primary circuit ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ 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 None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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