Transformers The steel used for transformer core has High silicon content Low hysteresis loss High permeability All of the listed here High silicon content Low hysteresis loss High permeability All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Sludge Odour Gases Moisture Sludge Odour Gases Moisture ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Potential transformer Current transformer Auto transformer Step-up transformer Potential transformer Current transformer Auto transformer Step-up transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Hysteresis losses are reduced Eddy losses are totally eliminated Copper losses are negligible Saving in winding material Hysteresis losses are reduced Eddy losses are totally eliminated Copper losses are negligible Saving in winding material ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.018 18 5.5 0.18 0.018 18 5.5 0.18 ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one great than one less than one None of these approximately equal to one great than one less than one None of these ANSWER DOWNLOAD EXAMIANS APP
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