Transformers A transformer will work on AC as well as DC Dc only None of the listed here Ac only AC as well as DC Dc only None of the listed here Ac only 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? 2 V 180 V 20 V 18 V 2 V 180 V 20 V 18 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Silicon steel Copper Aluminium Wood Silicon steel Copper Aluminium Wood ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small Leakage flux is small Iron core is used Applied voltage and frequency are constant Losses are small ANSWER DOWNLOAD EXAMIANS APP
Transformers In case of 3-phase induction motors, plugging means pulling the motor directly on line without a starter interchanging two supply phases for quick stopping locking of rotor due to harmonics starting the motor on load which is more than the rated load pulling the motor directly on line without a starter interchanging two supply phases for quick stopping locking of rotor due to harmonics starting the motor on load which is more than the rated load ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is the main advantage of an auto-transformer over a two winding transformer? Copper losses are negligible Hysteresis losses are reduced Saving in winding material Eddy losses are totally eliminated Copper losses are negligible Hysteresis losses are reduced Saving in winding material Eddy losses are totally eliminated ANSWER DOWNLOAD EXAMIANS APP
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