Transformers Which of the following acts as a protection against high voltage surges due to lightning and switching? Breather Thermal overload relays Horn gaps Conservator Breather Thermal overload relays Horn gaps Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers An open-circuit test on a transformer is conducted primarily to measure total loss copper loss core loss insulation resistance total loss copper loss core loss insulation resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Hysteresis loss is decreased Eddy current is increased Magnetising current is greatly increased Reluctance of magnetic path is decreased Hysteresis loss is decreased Eddy current is increased Magnetising current is greatly increased 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 2 V 20 V 180 V 18 V 2 V 20 V 180 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find Iron loss at no load Cu loss at any desire load None of the listed here Cu loss at no load Iron loss at no load Cu loss at any desire load None of the listed here Cu loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following insulating materials can withstand the highest temperature safely? Mica Glass fibre Asbestos Cellulose Mica Glass fibre Asbestos Cellulose ANSWER DOWNLOAD EXAMIANS APP
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