Transformers If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ? 6250 Ω 25 Ω 62500 Ω 250 Ω 6250 Ω 25 Ω 62500 Ω 250 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural air cooling is generally restricted for transformers up to 15 MVA 1.5 MVA 50 MVA 5 MVA 15 MVA 1.5 MVA 50 MVA 5 MVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The permissible flux density in case of cold rolled grain oriented steel is around 4.7 Wb/m² 3.7 Wb/m² 2.7 Wb/m² 1.7 Wb/m² 4.7 Wb/m² 3.7 Wb/m² 2.7 Wb/m² 1.7 Wb/m² ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Total equivalent resistance Copper losses Total equivalent leakage reactance Turn ratio Total equivalent resistance Copper losses Total equivalent leakage reactance Turn ratio ANSWER DOWNLOAD EXAMIANS APP
Transformers When the secondary of a transformer is short circuited, the primary inductance _______ None of the listed here Remians unchanged Is decreased Is increased None of the listed here Remians unchanged Is decreased Is increased ANSWER DOWNLOAD EXAMIANS APP
Transformers Open circuit test on transformers is conducted to determine hysteresis losses core losses copper losses eddy current losses hysteresis losses core losses copper losses eddy current losses ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS