Transformers A no-load test is performed on a transformer to determine core loss magnetising current copper loss magnetising current and loss efficiency core loss magnetising current copper loss magnetising current and loss efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Buchholz relay Overfluxing protection All of these Overcurrent protection Buchholz relay Overfluxing protection All of these Overcurrent protection ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer operates poorly at very low frequencies because _____ Permeability of core is increased Magnetising current is abnormally high Primary reactance is too much increased None of the listed here Permeability of core is increased Magnetising current is abnormally high Primary reactance is too much increased None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Copper losses Iron losses Winding resistance Leakage reactance Copper losses Iron losses Winding resistance Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the resistance between its primary and secondary is Infinite 1 ohm Zero 1000 ohms Infinite 1 ohm Zero 1000 ohms ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum efficiency of a distribution transformer is at 80% full load at full load at no load at 50% full load at 80% full load at full load at no load at 50% full load ANSWER DOWNLOAD EXAMIANS APP
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