Transformers The iron core is used to ______of the transformer. Reduce core loss None of the listed here Increase the wight Provide tight magnetic coupling Reduce core loss None of the listed here Increase the wight Provide tight magnetic coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 4 9.6 0.4 0.96 4 9.6 0.4 0.96 ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer routine efficiency depends upon Power factor of load Load current Supply frequency Both power factor and load current Power factor of load Load current Supply frequency Both power factor and load current 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? 0 W 1,020 W 111.5 W 14.1 W 0 W 1,020 W 111.5 W 14.1 W ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are copper losses magnetic losses friction and windage losses hysteresis and eddy current losses copper losses magnetic losses friction and windage losses hysteresis and eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be fluctuating load poor insulation saturation of core mechanical vibrations fluctuating load poor insulation saturation of core mechanical vibrations ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS