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? 18 V 20 V 2 V 180 V 18 V 20 V 2 V 180 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following 3 phase connections of transformer create disturbances in communication systems Star/Delta Delta/Delta Delta/Star Star/Star Star/Delta Delta/Delta Delta/Star Star/Star ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Cause voltage drop in the windings Decreases copper losses Increase copper losses None of the listed here Cause voltage drop in the windings Decreases copper losses Increase copper losses None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Odour Moisture Gases Sludge Odour Moisture Gases Sludge ANSWER DOWNLOAD EXAMIANS APP
Transformers For the parallel operation of single phase transformers it is necessary that they should have same kVA rating same polarity same number of turns on the secondary side. same efficiency same kVA rating same polarity same number of turns on the secondary side. same efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be mechanical vibrations fluctuating load poor insulation saturation of core mechanical vibrations fluctuating load poor insulation saturation of core ANSWER DOWNLOAD EXAMIANS APP
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