Transformers A tap changer is used on a transformer for Adjustments in secondary voltage Adjustment in primary voltage Adjustment in both primary and secondary None of the listed here Adjustments in secondary voltage Adjustment in primary voltage Adjustment in both primary and secondary None of the listed here 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? 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 is the main advantage of an auto-transformer over a two winding transformer? Eddy losses are totally eliminated Hysteresis losses are reduced Saving in winding material Copper losses are negligible Eddy losses are totally eliminated Hysteresis losses are reduced Saving in winding material Copper losses are negligible ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which has interleaved primary and secondary windings core of stainless steel and winding of pure copper metal no losses and magnetic leakage a common core for its primary and secondary windings interleaved primary and secondary windings core of stainless steel and winding of pure copper metal no losses and magnetic leakage a common core for its primary and secondary windings ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which _______ None of the listed here Has same number of primary and secondary turns Does not work Has no losses and leakage reactance None of the listed here Has same number of primary and secondary turns Does not work Has no losses and leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers upto a rating of 250 kVA 1000 kVA 500 kVA 3000 kVA 250 kVA 1000 kVA 500 kVA 3000 kVA ANSWER DOWNLOAD EXAMIANS APP
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