Transformers When the secondary of a transformer is short circuited, the primary inductance _______ Remians unchanged Is increased None of the listed here Is decreased Remians unchanged Is increased None of the listed here Is decreased ANSWER DOWNLOAD EXAMIANS APP
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 ? 250 Ω 62500 Ω 6250 Ω 25 Ω 250 Ω 62500 Ω 6250 Ω 25 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Iron core has high permeability Applied voltage is sinusoidal Transformer is not an efficient device Air is not a good magnetic insulator Iron core has high permeability Applied voltage is sinusoidal Transformer is not an efficient device ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. None of the listed here Less than Equal to Higher than None of the listed here Less than Equal to Higher than ANSWER DOWNLOAD EXAMIANS APP
Transformers An isolation transformer has primary to secondady turns ratio of Can be any ratio 1:1 2:1 1:2 Can be any ratio 1:1 2:1 1:2 ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ None of the listed here Oil cooled Water cooled Natural air cooled None of the listed here Oil cooled Water cooled Natural air cooled ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS