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 5 A 20 A 10 A 15 A 5 A 20 A 10 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased Magnetising current is greatly increased Hysteresis loss is decreased Eddy current is increased Reluctance of magnetic path is decreased ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it is safe to human beings None of these avoids core saturation and high voltage induction protects the primary circuit is safe to human beings None of these avoids core saturation and high voltage induction protects the primary circuit ANSWER DOWNLOAD EXAMIANS APP
Transformers Power transformers are generally designed to have maximum efficiency around no-load near full-load half-load 10% overload no-load near full-load half-load 10% overload ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer routine efficiency depends upon Both power factor and load current Power factor of load Load current Supply frequency Both power factor and load current Power factor of load Load current Supply frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural air cooling is generally restricted for transformers up to 1.5 MVA 50 MVA 15 MVA 5 MVA 1.5 MVA 50 MVA 15 MVA 5 MVA ANSWER DOWNLOAD EXAMIANS APP
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