Transformers Which of the following transformer should never have the secondary open circuited while the primary is energised? Power transformer Current transformer Potential transformer Auto transformer Power transformer Current transformer Potential transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 100 W 400 W None of the listed here 200 W 100 W 400 W None of the listed here 200 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The power transformer is a constant Current device Main flux device Power device Voltage device Current device Main flux device Power device Voltage device ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as zoom ringing buzz hum zoom ringing buzz hum ANSWER DOWNLOAD EXAMIANS APP
Transformers Material used for construction of transformer core is usually Copper Aluminium Wood Silicon steel Copper Aluminium Wood Silicon steel ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because copper loss becomes high in proportion to the output secondary output is much less as compared to primary input iron loss is increased considerably voltage drop both in primary and secondary becomes large copper loss becomes high in proportion to the output secondary output is much less as compared to primary input iron loss is increased considerably voltage drop both in primary and secondary becomes large ANSWER DOWNLOAD EXAMIANS APP
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