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 ? 62500 Ω 25 Ω 250 Ω 6250 Ω 62500 Ω 25 Ω 250 Ω 6250 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer does not posses ______changing property. Impedance Current Power Voltage Impedance Current Power Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same number of turns on the secondary side. same polarity same efficiency same kVA rating same number of turns on the secondary side. same polarity same efficiency same kVA rating ANSWER DOWNLOAD EXAMIANS APP
Transformers In the short circuit test on a transformer, we generally short circuit ______ None of the listed here Either low or high voltage winding High voltage winding Low voltage winding None of the listed here Either low or high voltage winding High voltage winding Low voltage winding ANSWER DOWNLOAD EXAMIANS APP
Transformers When secondary of a current transformer is open-circuited its iron core will be none of above will happen cool as there is no secondary current hot because of heavy iron losses taking place in it due to high flux density hot because primary will carry heavy current none of above will happen cool as there is no secondary current hot because of heavy iron losses taking place in it due to high flux density hot because primary will carry heavy current ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Auto transformer Potential transformer Power transformer Current transformer Auto transformer Potential transformer Power transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
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