Transformers A transformer operates poorly at very low frequencies because _____ Permeability of core is increased None of the listed here Primary reactance is too much increased Magnetising current is abnormally high Permeability of core is increased None of the listed here Primary reactance is too much increased Magnetising current is abnormally high ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is increased, the eddy current _____ Remains unchanged Is increased None of the listed here Is decreased Remains unchanged Is increased None of the listed here Is decreased ANSWER DOWNLOAD EXAMIANS APP
Transformers In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues? 111.5 W 1,020 W 14.1 W 0 W 111.5 W 1,020 W 14.1 W 0 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Copper losses Winding resistance Iron losses Leakage reactance Copper losses Winding resistance Iron losses Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the resistance between its primary and secondary is 1 ohm Infinite Zero 1000 ohms 1 ohm Infinite Zero 1000 ohms ANSWER DOWNLOAD EXAMIANS APP
Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 1.7 V 0 V 1 V 0.85 V 1.7 V 0 V 1 V 0.85 V ANSWER DOWNLOAD EXAMIANS APP
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