Transformers The no load primary current is about ______of full load primary current. 3-5% 30-40% 15-30% Above 40% 3-5% 30-40% 15-30% Above 40% ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a fitting on a transformer? Buchholz's relay Commutator Conservator Breather Buchholz's relay Commutator Conservator Breather ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Is increased Remians unchanged Is decreased None of the listed here Is increased Remians unchanged Is decreased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of less than 15 A None of these 15 A more than 15 A less than 15 A None of these 15 A more than 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ 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 Hysteresis loss is decreased Magnetising current is greatly increased ANSWER DOWNLOAD EXAMIANS APP
Transformers What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV? 8 kVA 0.25 kVA 16 kVA 4 kVA 8 kVA 0.25 kVA 16 kVA 4 kVA ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS