Transformers Noise level test in a transformer is a type test special test None of these routine test type test special test None of these routine test ANSWER DOWNLOAD EXAMIANS APP
Transformers The main reason for generation of harmonics in a transformer could be saturation of core poor insulation mechanical vibrations fluctuating load saturation of core poor insulation mechanical vibrations fluctuating load ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are magnetic losses friction and windage losses hysteresis and eddy current losses copper losses magnetic losses friction and windage losses hysteresis and eddy current losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Any of the listed here Oil cooling Natural air cooling Air blast cooling Any of the listed here Oil cooling Natural air cooling Air blast cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because secondary output is much less as compared to primary input iron loss is increased considerably copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large secondary output is much less as compared to primary input iron loss is increased considerably copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of None of these more than 15 A 15 A less than 15 A None of these more than 15 A 15 A less than 15 A ANSWER DOWNLOAD EXAMIANS APP
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