Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 450 350 900 210 450 350 900 210 ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same efficiency same number of turns on the secondary side. same kVA rating same polarity same efficiency same number of turns on the secondary side. same kVA rating same polarity ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Copper losses Friction losses Iron losses Total losses Copper losses Friction losses Iron losses Total losses ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer will have zero efficiency at Half full load Full load None of the listed here No load Half full load Full load None of the listed here No load ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is also called its Power efficiency Energy efficiency None of the listed here Current efficiency Power efficiency Energy efficiency None of the listed here Current efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 20 V 180 V 18 V 2 V 20 V 180 V 18 V 2 V ANSWER DOWNLOAD EXAMIANS APP
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