Transformers In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is four times the primary current one-fourth the primary current and equal to the primary current equal to the primary current one-fourth the primary current four times the primary current one-fourth the primary current and equal to the primary current equal to the primary current one-fourth the primary current 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 18 V 180 V 2 V 20 V 18 V 180 V 2 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Saving in winding material Eddy losses are totally eliminated Hysteresis losses are reduced Copper losses are negligible Saving in winding material Eddy losses are totally eliminated Hysteresis losses are reduced Copper losses are negligible ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a part of transformer installation? Exciter Breather Buchholz relay Conservator Exciter Breather Buchholz relay Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ None of the listed here Oil cooled Natural air cooled Water cooled None of the listed here Oil cooled Natural air cooled Water cooled ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is negligible at full load Helps in transfer of energy Is minimised by interleaving the primary and secondary windings Produces mutually induced emf Is negligible at full load Helps in transfer of energy Is minimised by interleaving the primary and secondary windings Produces mutually induced emf ANSWER DOWNLOAD EXAMIANS APP
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